CN203533917U - Integrated heat exchanging type solar water heater with heat collection function and heat storage function - Google Patents

Abstract

The utility model relates to a heat-collecting and heat-storing integrated heat-exchanging solar water heater. Its characteristics are: it includes a flat plate heat collector (6), and the liquid outlet and liquid inlet of the flat plate heat collector (6) are connected to the heat storage tank respectively, and the heat storage tank includes a shell (4), in which The body (4) is provided with an inner cabin (8), and an internal heat exchange medium is installed in the inner cabin (8), and a heat exchanger (9) is also installed in the inner cabin (8). The inlet of the device (9) communicates with the external cold water inlet (2) and its outlet communicates with the external hot water outlet (3); the outer surface of the inner cabin (8) is also coated with an outer cabin (7), and the outer cabin The inlet and outlet of (7) communicate with the liquid outlet and liquid inlet of the aforementioned flat plate heat collector (6) through pipelines respectively. The beneficial effect of the utility model is that: the hot water outlet pressure of the water heater of the utility model is derived from the cold water pressure, and the outlet water temperature is easy to adjust without fluctuating hot and cold.

Description

Heat collection and heat storage integrated heat exchange solar water heater

technical field

The utility model relates to a heat-collecting and heat-storing integrated heat-exchanging solar water heater.

Background technique

In recent years, under the environment that the country advocates building a conservation-oriented society and advocating energy conservation and emission reduction, with the continuous upgrading of technology, my country's solar energy industry has achieved rapid development. According to the "Research Report on the Development of China's Solar Water Heater Industry", at present, my country has become the world's largest producer and consumer of solar water heaters. There are more than 4,000 manufacturers. The total annual output has exceeded 15 million square meters, with an output value of more than 20 billion yuan, accounting for more than 70% of the world's promotion. It is increasing at a rate of more than 25% every year.

At present, the most commonly used in China is the vacuum tube solar water heater. In practical applications, the common water-falling single unit is the main type, with an open water tank, and the water pressure comes from the vertical drop between the water tank and the water point. Although the thermal efficiency of this kind of solar water heater is high, the outlet water temperature is easily affected by the change of solar irradiance. The disadvantage is that the water temperature is low and then high during use. Moreover, solar water heaters need to use the hot water stored in the water tank, and the hot water in the water tank is not all used up every day, and there is always a certain amount of surplus, which will cause the water in the water tank to be heated repeatedly, and a large amount of nitrite will be produced. and the Healing Legion. Especially some vacation villas only use the hot water in the water tank once a week, and the water quality is seriously polluted.

Utility model content

The purpose of the utility model is to provide a heat-collecting and heat-storing integrated heat-exchanging solar water heater with stable outlet water temperature and hygienic water quality.

A heat exchange solar water heater integrating heat collection and heat storage, which is special in that it includes a flat plate heat collector, and the liquid outlet and liquid inlet of the plate heat collector are respectively communicated with a heat storage tank, and the heat storage tank includes The shell is provided with an inner compartment inside the shell, and an internal heat exchange medium is installed in the inner compartment, and a heat exchanger is also installed in the inner compartment, and the inlet of the heat exchanger communicates with the external cold water inlet and its The outlet is communicated with the external hot water outlet; the outer surface of the inner cabin is also covered with an outer cabin, and the inlet and outlet of the outer cabin are respectively communicated with the liquid outlet and the liquid inlet of the aforementioned flat plate collector through pipelines, so that Make the external heat exchange medium circulate between the flat plate heat collector and the outer cabin.

Wherein the flat plate collector is installed on the base.

Wherein a circulation pump is installed on the pipeline between the flat plate heat collector and the outer cabin.

Wherein the auxiliary electric heating device is also installed in the inner cabin.

Wherein the heat exchanger in the inner compartment adopts finned coil tubes, and the finned coil tubes are installed on the inner wall of the inner compartment through brackets.

Water is used as the internal heat exchange medium in the inner cabin, and water is also used as the external heat exchange medium in the outer cabin.

The beneficial effects of the utility model are as follows: 1. The hot water outlet pressure of the water heater of the utility model is derived from the cold water pressure, and the outlet water temperature is easy to adjust without fluctuating hot and cold. 2. The water heater of the utility model uses heat-exchanging finned coils for heat exchange and water intake, and does not use the primary water in the water tank. The tap water is quickly ejected through the heat exchange of the coils, does not contain nitrite and pathogenic bacteria, and the water quality is fresh. 3. The water heater of this utility model adopts a double-chamber structure design to ensure that the water used is always at a suitable temperature.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is the structural representation of the utility model.

Detailed ways

As shown in Figures 1 and 2, the utility model is a heat-collecting and heat-storing integrated heat-exchanging solar water heater, which includes a flat plate heat collector 6, and specifically adopts a conventional solar plate heat collector currently on the market. The liquid outlet and the liquid inlet of the device 6 communicate with the heat storage tank respectively, and the heat storage tank includes a shell 4, and an airtight inner compartment 8 is arranged in the shell 4, and an internal heat exchanger is installed in the inner compartment 8. heat medium, in addition, a heat exchanger 9 is installed in the inner cabin 8, the inlet of the heat exchanger 9 communicates with the external cold water inlet 2 and its outlet communicates with the external hot water outlet 3; on the outer surface of the inner cabin 8 It is also covered with an airtight outer cabin 7, and the inlet and outlet of the outer cabin 7 are respectively communicated with the liquid outlet and the liquid inlet of the aforementioned flat plate heat collector 6 through pipelines, so that the external heat exchange medium can collect heat on the flat plate. Communication between the device 6 and the outer compartment 7.

Wherein the flat plate heat collector 6 is installed on the base 10, and a circulation pump 5 is installed on the pipeline between the plate heat collector 6 and the outer cabin 7, and an auxiliary electric heating device 1 is also installed in the inner cabin 8 in addition.

In addition, the heat exchanger 9 in the inner compartment 8 adopts a fin coil, and the fin coil is installed on the inner wall of the inner compartment 8 through a bracket. Water is used as the internal heat exchange medium in the inner cabin 8 , and water is also used as the external heat exchange medium in the outer cabin 7 .

Using method and working principle of the present utility model are:

In order to overcome the disadvantages of unstable temperature and poor water quality of the existing vacuum tube solar water heaters, the utility model provides a heat-collecting-heat-storage integrated heat-exchanging solar water heater. Solve problems such as unstable outlet water temperature and water pollution. A heat exchanger 9 is arranged in the inner cabin 8, and the water or other phase-change materials in the inner cabin 8 are used as an energy storage medium, and the heat is stored in the outer cabin 7 and the inner cabin 8 in sequence through sunlight irradiation, and the cold water passes through the water in the inner cabin 8. Heat exchanger 9 absorbs heat and heats up rapidly, and the outlet water temperature is close to the temperature of water in the water tank (about 2°C temperature difference).

The technical scheme adopted in the utility model comprises:

1. Heat collection link: the thermal insulation water tank is divided into two parts: the outer cabin 7 and the inner cabin 8 by the partition plate. The flat plate collector 6 only heats the external heat exchange medium (water) in the outer cabin 7, and the outer cabin 7 transmits heat through The thin wall with good performance transfers heat to the internal heat exchange medium (water) in the inner cabin 8, and the internal heat exchange medium absorbs most of the heat and stores it in the internal heat exchange medium.

2. Heat exchange link: the built-in finned coil is used as the heat exchanger 9, and the cold fluid (water) exchanges heat with the internal heat exchange medium in the inner cabin 8 under the action of the circulating pump 5. The heat exchange link is mainly composed of circulation pipes and finned coils. Ensure that the generated heat is released to the water in the finned coil in a timely and balanced manner. After the heat exchange, the temperature of the heat exchange medium in the inner cabin 8 decreases, and the water in the outer cabin 7 will circulate rapidly under the action of the circulation pump 5 , while the internal heat exchange medium in the inner cabin 8 continues to absorb heat from the outer cabin 7 through the thin wall, ensuring continuous heat supply.

3. Heat storage link: In order to overcome the problem that the efficiency of the solar water heating system decreases due to the rise of the water temperature in the water heater, the internal heat exchange medium is placed in the inner cabin 8 instead of water without increasing the size of the structure. It can increase the heat capacity of the system, ensure long-term heating, and improve the thermal efficiency of the water heater.

Claims (6)

1. A heat-collecting and heat-storing integrated heat exchange solar water heater, characterized in that it includes a flat plate collector (6), and the liquid outlet and liquid inlet of the flat plate heat collector (6) are respectively connected to the heat storage tank , the heat storage tank includes a shell (4), and an inner compartment (8) is provided in the shell (4), and an internal heat exchange medium is installed in the inner compartment (8), and in addition, in the inner compartment (8 ) is also equipped with a heat exchanger (9), the inlet of the heat exchanger (9) communicates with the external cold water inlet (2) and its outlet communicates with the external hot water outlet (3); The surface is also covered with an outer cabin (7), and the inlet and outlet of the outer cabin (7) are respectively connected with the liquid outlet and the liquid inlet of the aforementioned flat plate collector (6) through pipelines, so that the external heat exchange The medium can circulate between the flat plate heat collector (6) and the outer cabin (7). 2. The heat-collection-storage integrated heat-exchange solar water heater according to claim 1, characterized in that: wherein the flat plate heat collector (6) is installed on the base (10). 3. The integrated heat exchange solar water heater with heat collection and heat storage according to claim 1, characterized in that: a circulating pump (5) is installed on the pipeline between the flat plate heat collector (6) and the outer cabin (7) ). 4. The heat-collection-storage integrated heat-exchange solar water heater according to claim 1, characterized in that: an auxiliary electric heating device (1) is also installed in the inner compartment (8). 5. The heat-collecting and heat-storage integrated heat-exchanging solar water heater according to claim 1, characterized in that: the heat exchanger (9) in the inner compartment (8) adopts finned coils, and the finned coils Installed on the inner wall of the inner cabin (8) by a bracket. 6. The heat collection and heat storage integrated heat exchange solar water heater according to any one of claims 1 to 5, wherein the internal heat exchange medium in the inner cabin (8) is water, and the outer cabin (7 ) also uses water as the external heat exchange medium.

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