CN201152642Y - Non-pressure-bearing split solar water heater - Google Patents

Abstract

The utility model discloses a non-pressure split type solar energy water heater which mainly comprises a heat collector and a water tank, wherein, the water tank is assembled with the heat collector in a split type. The water tank adopts a non-pressure heat preservation water tank, the heat collector is formed by transversally distributing a plurality of vacuum pipes, and simultaneously, a main water guiding pipe and a branch water guiding pipe are installed in the heat collector. The water tank is ensured to be installed at a position lower than the heat collector. The non-pressure split type solar energy water heater can achieve the autonomy installation of the solar energy water heater through the composition and the operation of the heat collector, the main water guiding pipe and the branch water guiding pipe, a water returning device, a circulating pump, a control valve, the water tank, a display and other parts, the system forcing type circulation thermal efficiency is greatly enhanced, the main water guiding pipe and the branch water guiding pipe can ensure the exchange between cold water and hot water of the heat collector every time to be thorough, the water returning device not only can ensure the thermal efficiency of the hot water return flow to be utilized to be greatly enhanced, but also can ensure that the frost crack of the vacuum pipe of the heat collector under the conditions of low light intensity, low temperature or ultra low temperature can be totally prevented, simultaneously, the phenomenon that the thermal efficiency of the vacuum pipe is decreased due to water incrustation incrusted in the vacuum pipe is greatly reduced. The pressure can be automatically boosted during the bathing.

Description

Non-pressurized split solar water heater

technical field

The utility model relates to a solar water heater, in particular to a non-supporting solar water heater with a heat collector higher than a water tank and installed separately.

Background technique

As a clean and pollution-free green environmental protection device, solar water heaters are becoming more and more popular. At present, the popular solar water heaters on the market are mostly conjoined or pressure-bearing wall-mounted. The main form of the conjoined type is that the water tank is connected with the vacuum tube; in the pressure-bearing wall-mounted type, although the water tank and the heat collector are separated, the vacuum tube of the heat collector and the water tank are connected together through a closed metal tube. The working principle of the conjoined type is: the vacuum glass tube is irradiated by sunlight, the water in the tube is heated and buoyant, and exchanges heat with the water in the heat preservation water tank to achieve the temperature rise of all the water. From the structure and heat conduction mode, this solar water heater has the following defects:

First, the vacuum glass tube is integrated with the heat preservation water tank, which occupies a large space, and the workload of the water heater is also large after entering the water, so there are great limitations in the placement location, resulting in the fact that only residents on the top floor can install it. With solar water heaters, other users can't install or use them if they want to.

Due to the limitations of daylighting and bulky installation of conjoined solar water heaters, the installation of solar water heaters often affects the aesthetics and integration of urban buildings. At the same time, the installation of non-top-level users brings

First, the social problems caused by coming safety and water leakage have led to restrictions on solar water heaters by local property management departments and relevant government departments.

Second, the heat exchange of water in the vacuum glass tube is a natural exchange in a single body tube. When the temperature is not high, the transfer speed of this heat exchange is very slow, and the heat exchange efficiency is very low.

Three, because the water tank is connected with the vacuum tube, and the water tank is above the vacuum tube, so the water in the vacuum tube can never flow back into the water tank for use.

Four, the solar water heater is placed outdoors, and the heat dissipation of the water tank is very large. Under low temperature and low light (such as night) in cold winter, the water in the vacuum tube is easy to freeze, thereby freezing and cracking the vacuum tube.

Fifth, there is water retention in the vacuum glass tube for a long time, and it is a natural exchange, so the residues in the water are very easy to precipitate, and there will be a lot of sediment and scale over time, and the removal of these sediments or scale can only be done by disassembling the vacuum tube Down to complete, which largely hinders the absorption of solar energy.

The working principle of the pressure-bearing wall-mounted solar water heater is: the vacuum glass tube is irradiated by sunlight, and the radiant energy generated heats the metal tube in the vacuum tube, so that the heat-conducting medium in the metal tube heats up or vaporizes, and then floats to the water tank. The heat energy is transferred to the water. After the medium cools down, it sinks and flows back to the vacuum tube to be heated again. In this way, the reciprocating cycle continues to heat the water in the water tank. From the point of view of the structure and heat conduction method, there is a big problem in this kind of solar water heater: since it needs to add a metal tube with closed circulation, and the water tank needs to be pressure-bearing, the material cost of the water heater will be increased by at least 3-5 times. The retail price to consumers will increase accordingly.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned deficiencies in the prior art, to provide a free installation with less restrictions, high thermal efficiency of forced circulation, water tank and heat collector separate indoor and outdoor installation, not easy to freeze and crack vacuum tubes in winter, and vacuum tubes. Hot water return tank, affordable solar water heater.

In order to achieve this purpose, the non-pressure-bearing split solar water heater designed by the utility model includes a separately arranged heat preservation water tank, a heat collector, a circulation pump, a control valve, a return device, and the like. The heat preservation water tank is a non-pressurized water tank, and a water level temperature sensor is installed in the water tank. The heat collector is composed of a plurality of vacuum glass tubes arranged horizontally; a main tube is arranged in the header connecting the opposite vacuum tubes; branch tubes are arranged in the vacuum tubes. The solar collector forms a circulation and return system through the water tank, circulation pump, upper and lower shared pipes and solenoid valves, one-way pipes and check valves, and main branch water pipes.

The advantages of the present invention are:

1. The heat collector and the water tank are installed separately. The heat collector can be integrated with buildings such as awnings. It is not only free to install, but also multi-functional independently. water heater.

Second, since the solar water heater is integrated with traditional awnings and other buildings, the solar water heater can be integrated with the building, so it does not affect the beauty and integration of the building. At the same time, because the solar water heater is installed on its own balcony, it can avoid Social problems caused by the installation of solar water heaters such as safety, water leakage, etc.;

3. The composition of the main pipe and the branch pipe can allow the upward cold water to exchange cold and hot water from the bottom of the blind end of the vacuum tube, so that each forced cycle is very thorough, and its thermal efficiency is greatly improved;

Fourth, the water tank and the heat collector are installed separately, and the position of the heat collector is higher than the water tank, so through the backflow device, the water in the heat collector can be naturally returned to the water tank for use through the drop, so that the thermal efficiency of the solar water heater is directly It can be increased by about 30%;

Fifth, under normal circumstances, the water tanks are placed indoors, and the indoor air temperature is generally maintained at a basic constant temperature state of about 20 degrees Celsius, so the heat loss of the water tank is much smaller than that of the outdoors, and at the same time, due to the fact that the light cannot reach Under a certain light intensity (such as at night), the water in the vacuum tube flows back into the water tank, so no matter how low the temperature is, the vacuum tube will not freeze and crack;

6. The water in the vacuum tube is constantly flowing and exchanging, so the residues in the water are not easy to precipitate, and it is not easy to affect the absorption of solar energy;

7. Since there is no need to add a closed precious metal circulation pipeline, its price is similar to that of the traditional desktop, which is easy for consumers to accept;

Description of drawings

The accompanying drawing is a structural schematic diagram of a non-pressurized split solar water heater.

Detailed ways

Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in further detail:

The non-pressurized split solar water heater shown in the figure includes a solar heat collector 1 installed outdoors and a non-pressurized water tank 3 installed indoors. The heat collector 1 is composed of a plurality of vacuum glass tubes 14 arranged horizontally, and the connection to the vacuum tubes 14 is connected by a collector 15. A main tube 9 is arranged in the collector 15, and a vacuum tube 14 is provided in each vacuum tube 14. root branch 10. A cold water inlet and a solenoid valve 5 are provided above the water tank 3 , and a temperature and water level sensor 13 is provided in the water tank 3 . The solar water heater forms a circulation and return system through heat collectors, water tanks 3, circulation pumps 2, control valves 4, solenoid valves 5, female 9 branches and 10 water conduits, etc.

In the design of the above-mentioned solar circulation and return system, the position of the heat collector 1 must be higher than the position of the water tank 3, so that through the upper and lower common pipe 7, the control valve 4, the one-way pipe 8 and the check valve 6, the external environment does not reach a certain level. When the light is strong, it can be controlled manually or automatically to return the water in the heat collector 1 to the water tank 3 through the natural drop.

In above-mentioned circulation, reflux system, in any case when opening the bath switch 11, the whole system must preferentially start the circulation pump 2 to pressurize the bath 17. Can know the water quantity and the water temperature in the water tank 3 at any time by water level temperature sensor 13 and display 12 simultaneously. Water can be heated to bathe 17 by electric heating 16 under long-term low-light weather conditions.

The working principle of the utility model is as follows: when the external light reaches a certain light intensity, the manual control or automatic control starts the system operation, first opens the electromagnetic valve 5 to enter the water, and when the water level temperature sensor 13 in the water tank 3 detects that the water has reached When the value is required, the electromagnetic valve 5 is closed, and the circulation pump 2 and the control valve 4 are started simultaneously, and the water is sent to the bottom of the blind end of the vacuum tube 14, the collector 15, and returns to the water tank 3 through the pipeline and the female 9 and branch 10 pipes. , and then enter the manual or automatic cycle program to cycle. When the outside light does not reach a certain light intensity, open the control valve 4, and the water in the heat collector 1 will naturally flow back to the water tank 3 through the drop, and then close the control valve 4. The whole system into standby. In any case, turn on the shower switch 11 and the whole system must give priority to start the circulation pump 2 to pressurize the bath 17.

Claims (4)

1. non-pressure-bearing separated type solar water heater is characterized in that: it comprises heat collector (1), attemperater (3), circulating pump (2), control valve (4), temperature level sensor (13) of a lateral arrangement etc.Heat collector (1) is made up of many glass tube with vacuums (14) lateral arrangement; In the coupling device (15) that connects the subtend vacuum tube, be furnished with a female pipe (9); In every vacuum tube (14), be provided with an arm (10); In attemperater (3), be provided with temperature level sensor (13).Solar water heater by water tank (3), circulating pump (2), under water the shared pipe of water (7) and control valve (4),

Uniguide (8) and check-valves (6), female (9) (10) aqueduct form circulation, return-flow system.

2. non-pressure-bearing separated type solar water heater according to claim 1, it is characterized in that: solar thermal collector (1) and water tank (3) partial installation, and the position of heat collector (1) must high water tank (3), so that certain drop is arranged during the water natural back flow water tank (3) in the heat collector (1).

3. non-pressure-bearing separated type solar water heater according to claim 1, it is characterized in that: be provided with in the coupling device (15) on the heat collector (1) in female pipe (9), the vacuum tube (14) and be provided with arm (10), thereby constitute, the cold water of uplink cycle is from the cecum bottom beginning hot and cold water exchange of vacuum tube (14).

4. non-pressure-bearing separated type solar water heater according to claim 1, it is characterized in that: coupling device (15) lower end is provided with on one shared pipe of water (7) and control valve (4) under water, also be provided with a uniguide (9) and corresponding check-valves (6) simultaneously, so that the water in vacuum tube (14), coupling device (15), female pipe (9), the arm (10) is passed through drop natural back flow water tank (3).

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