CN203731715U - Flat plate solar water heater for gathering heat by using flat plate glass mirrors - Google Patents

Abstract

The utility model discloses a solar water heater for gathering heat by using flat plate glass mirrors. The solar water heater consists of a vertical bracket, a chassis, a hot water tank, a connecting pipe, a circulating pump, a revolving support and a chassis support rod, wherein a working medium heat exchanger is arranged in the hot water tank. The solar water heater is characterized in that a solar heat-collecting flat plate capable of absorbing heat from double faces is arranged on the upper part of the vertical bracket in parallel to the chassis; two flat plate glass mirrors are arranged on both sides of the lower part of the vertical bracket. The heat-absorbing plate is the solar heat-collecting flat plate capable of absorbing heat from double faces, and meanwhile two flat plate glass mirrors are used for gathering heat. Heat-absorbing copper pipes on the two heat-absorbing surfaces of the heat-collecting flat plate are connected in series, and are connected to a heat-collecting water tank through the circulating pump. Thus, the upper surface of the heat-collecting flat plate is directly used for receiving heat of solar energy, and the lower surface of the heat-collecting flat plate is used for receiving solar energy heat gathered by the two flat plate glass mirrors, so that the total heat-collecting intensity is about three times that of an ordinary single-face heat-collecting flat plate. Even under low solar radiation intensity, the temperature of hot water drained out of the water heater can be raised.

Description

A flat solar water heater using a flat glass mirror to gather heat

technical field

The utility model relates to a solar water heater, in particular to a flat solar water heater which uses a flat glass mirror to gather heat. the

Background technique

Conventional flat-panel solar water heaters are composed of a single-sided heat-absorbing flat-panel solar heat-absorbing panel and a hot water tank, and the heat-absorbing efficiency is usually 70%. In most parts of our country, even in summer and autumn, due to the rainy season and cloudy days, the utilization rate of solar energy is less than 50%, so that the output water temperature of the solar collector reaches about 60°C for less than 50% of the time.

The solar water heater adopting flat glass mirrors to gather heat can gather the solar energy of multiple heat-absorbing areas onto one solar heat collecting plate, which improves the heat energy intensity per unit area. The equipment cost per unit area is similar to that of ordinary flat-panel solar collectors, but the outlet temperature of hot water can be greatly improved, which can better meet the needs of users for hot water.

After retrieval, in the existing inventions of solar heat collecting water heaters, there is no invention of a solar water heater that adopts flat glass mirrors to collect heat, and the main heat absorbing body is a double-sided heat absorbing flat plate type solar heat collecting plate.

Contents of the invention

The purpose of the utility model is to provide a flat solar water heater which uses two flat glass mirrors to collect heat, and meanwhile, the main heat absorbing body of the water heater is a solar heat collecting flat plate which absorbs heat on both sides. One heat-absorbing surface of the heat-collecting plate faces the direction of the sun, and the other faces downward to absorb the heat reflected by two flat glass mirrors. The double-sided heat-absorbing copper pipes of the main heat-absorbing body are connected in series to the heat-collecting water tank through a circulation pump. The heat collecting plate directly receives the heat of the solar energy on the top, and then receives the solar heat collected by two flat glass mirrors on the bottom, so that the solar energy from multiple heat collecting surfaces can be concentrated on one heat collecting area. Higher hot water outlet temperatures can be obtained even at lower solar intensities.

The purpose of this utility model is achieved by the following methods:

A solar water heater using flat glass mirrors to collect heat, which consists of a vertical support, a bottom frame, a hot water tank equipped with a working fluid heat exchanger, a connecting pipe, a circulation pump, a rotary support, and a support rod for the bottom frame, and is characterized in that : The upper part of the vertical support is equipped with a double-sided heat-absorbing solar heat collection plate, and the installation direction is parallel to the bottom frame; two flat glass mirrors are installed on both sides of the lower part of the vertical support.

The plate glass mirror is centered on the revolving seat at the intersection of the vertical support and the underframe, and tilts upward at a certain angle.

The upward tilting angle of the plate glass mirror is adjusted by the adjusting screw on the outside.

The flat solar water heater using flat glass mirrors to collect heat of the utility model has a heat absorbing plate which is a double-sided solar heat collecting flat plate and adopts two flat glass mirrors to collect heat at the same time. One heat-absorbing surface of the double-sided heat-absorbing solar heat-collecting flat plate faces upward toward the sun, and the other heat-absorbing surface absorbs heat reflected by two flat glass mirrors downward. The heat-absorbing copper tubes on the two heat-absorbing surfaces of the heat-collecting plate are connected in series to the heat-collecting water tank through a circulating pump. In this way, the upper surface of the heat-collecting plate directly receives the heat of solar energy, and the lower surface receives the heat of the sun collected by two flat glass mirrors, and its total heat-collecting intensity is about three times that of a common single-sided heat-collecting plate. Even under low solar radiation intensity, the water heater can obtain high hot water outlet temperature.

Description of drawings

Fig. 1 is an embodiment of the present utility model.

Fig. 2 is a view along the direction A of Fig. 1 .

Detailed ways

The utility model is described in more detail in conjunction with the embodiment of accompanying drawing 1:

A flat solar water heater using a flat glass mirror to gather heat, comprising a double-sided heat-absorbing solar heat collecting flat plate 1, a vertical support 2, a flat glass mirror 3, a bottom frame 4, and a hot water tank 5 equipped with a working fluid heat exchanger , connecting pipe 6, circulating pump 7, adjusting screw 8, slewing bearing 9, and chassis support rod 10.

Structure and working principle of the present utility model are as follows:

In accompanying drawing 1, the flat type solar thermal collector plate 1 of double-sided heat absorption, is fixed in the sky above a certain height with vertical support 2 and is parallel with base frame 4. The underframe support bar 10 lifts the underframe to a certain angle so that the underframe is perpendicular to the sunlight. The upper heat-absorbing surface of the double-sided heat-absorbing solar heat-collecting flat panel 1 faces upward and is perpendicular to sunlight, directly absorbing the energy of sunlight. On the bottom frame 4 on both sides of the vertical support 2, two flat glass mirrors 3 are housed, and the flat glass mirror 3 takes the revolving seat 9 at the intersection of the vertical support and the bottom frame as the center of circle, and tilts upwards at a certain angle, so that the vertical The sunlight shot down from both sides of the support 2 is reflected by the flat glass mirror 3 and just shines on the lower heat-absorbing surface of the double-sided heat-absorbing solar heat collecting flat plate 1. 8 to make adjustments. Due to the concentration of two glass mirrors, the solar radiation heat obtained by the lower heat-absorbing surface of the double-sided heat-absorbing solar heat-collecting flat plate 1 is twice that of direct radiation, plus the heat absorbed by the heat-collecting surface directly facing the sun , the total heat obtained per unit area of the heat collecting plate is about three times that of the ordinary single-sided heat collecting method. The heat-absorbing copper pipe in the double-sided heat-absorbing solar heat collecting plate 1 is connected with the hot water tank 5 equipped with a working fluid heat exchanger through a pipeline 6 and a circulating pump 7 . The underframe support bar 10 lifts the underframe to a certain angle so that the underframe is perpendicular to the sunlight. In this way, the solar hot water produced by the flat solar thermal collector plate 1 is transported to the hot water tank through the pipeline 6 and the circulation pump 7 for storage by the user.

Claims (3)

1. A solar water heater using flat glass mirrors to collect heat, consisting of a vertical support (2), a bottom frame (4), a hot water tank (5) equipped with a working medium heat exchanger, a connecting pipe (6), and a circulating pump (7), composed of a slewing support (9) and an underframe support rod (10), and is characterized in that a double-sided heat-absorbing solar heat collecting plate (1) is installed on the upper part of the vertical support (2), and the installation direction is the same as that of the bottom The frame (4) is parallel; two flat glass mirrors (3) are equipped with on both sides of the bottom of the vertical support (2). 2. The solar water heater according to claim 1, characterized in that: the flat glass mirror (3) is centered on the swivel seat (9) at the intersection of the vertical bracket and the bottom frame, and tilts upward at a certain angle. 3. The solar water heater according to claim 2, characterized in that: the upward tilting angle of the flat glass mirror (3) is adjusted by the outside adjusting screw (8).