CN206787074U - A kind of phase-change thermal storage solar water heater with water route one-way circulation structure - Google Patents

Abstract

The utility model discloses a kind of phase-change thermal storage solar water heater with water route one-way circulation structure, including mounting bracket, conduit and solar vacuum heat-collecting pipe, solar vacuum heat-collecting pipe is installed on mounting bracket, solar vacuum heat-collecting pipe is internally provided with conduit, the surrounding of conduit is filled with equally distributed phase-change heat-storage material, one end of conduit is provided with cooling water inlet, the other end is provided with hot water outlet, suction pump is installed on conduit, cooling water inlet and hot water outlet are respectively positioned on the side of mounting bracket, cooling water inlet is connected with hot water outlet by connecting tube, and magnetic valve is installed in connecting tube.The device uses phase-change material as heat storage medium, and its heat storage capacity is times or higher of the regular solar water heater of same volume size, in fine day, can store more heats in case rainy days uses；Heat storage water tank need not be separately provided, the volume of solar water heater can be substantially reduced, makes the use of solar water heater and easier for installation.

Description

A phase-change heat storage solar water heater with a waterway unidirectional circulation structure

technical field

The utility model relates to a phase change heat storage solar water heater, in particular to a phase change heat storage solar water heater with a waterway unidirectional circulation structure, which belongs to the technical field of solar water heaters.

Background technique

Solar water heaters convert sunlight energy into heat energy, and heat water from low temperature to high temperature, so as to meet the hot water use in people's life and production. Solar water heaters are composed of heat collecting tubes, water storage tanks and related accessories. The conversion of solar energy into heat mainly depends on the heat collecting tubes. The temperature of the surface of the heat collector exposed to the sun is high, and the temperature of the backside of the heat collecting tube is low, and the water in the tube produces a temperature difference reaction. Using the principle of hot water floating up and cold water sinking, the water produces microcirculation to achieve the required hot water. Existing solar water heaters use water as the heat storage medium, which uses the increase in water temperature (sensible heat) to store heat, so the heat storage capacity is very low. In order to store more heat, the water tank is often designed to be larger , it is inconvenient to install and use solar energy; and as the water temperature rises, more heat will be lost, which is not conducive to the long-term preservation and utilization of heat.

Utility model content

The technical problem to be solved by the utility model is to overcome that the existing solar water heater uses water as the heat storage medium, which uses the rise of water temperature to store heat, so the heat storage capacity is very low, and with the rise of water temperature, It also has the disadvantage of dissipating more heat, and provides a phase-change thermal storage solar water heater with a waterway unidirectional circulation structure.

In order to solve the above technical problems, the utility model provides the following technical solutions:

The utility model provides a phase-change heat storage solar water heater with a waterway unidirectional circulation structure, which comprises a mounting frame, a conduit and a solar vacuum heat collecting tube, the solar vacuum heat collecting tube is installed on the mounting frame, and the solar vacuum heat collecting tube is mounted on the mounting frame. The inside of the heat collecting tube is provided with the conduit, and the periphery of the conduit is filled with evenly distributed phase-change heat storage materials. One end of the conduit is provided with a cold water inlet, and the other end is provided with a hot water outlet. The conduit is equipped with For the water pump, the cold water inlet and the hot water outlet are located on one side of the installation frame, the cold water inlet and the hot water outlet are connected through a connecting pipe, and a solenoid valve is installed on the connecting pipe.

As a preferred technical solution of the present invention, an electric water heater is installed on the hot water outlet, and the electric water heater is installed indoors.

As a preferred technical solution of the utility model, both ends of the solar vacuum heat collecting tubes are equipped with sealed heat preservation covers.

As a preferred technical solution of the utility model, a temperature measuring instrument is installed on the conduit, and the temperature measuring instrument is connected to the temperature display screen installed in the room through an optical cable.

As a preferred technical solution of the present utility model, the solenoid valve and the water pump are respectively electrically connected to a power supply through wires.

The beneficial effects achieved by the utility model are: the device adopts phase-change materials as the heat storage medium, and its heat storage capacity is several times or higher than that of ordinary solar water heaters with the same volume, and can store more heat in sunny days It is used in case of rainy days; there is no need to set up a separate hot water storage tank, which can greatly reduce the volume of solar water heaters, making the use and installation of solar water heaters more convenient; it is equipped with a waterway one-way circulation structure, which can pass through the circulation structure in continuous high temperature weather Make the hot water in the pipe circulate and dissipate heat, and prevent the solar vacuum heat collection tube from bursting due to excessive temperature.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the partial enlarged view of solar vacuum heat collecting tube in Fig. 1;

In the figure: 1. Mounting frame; 2. Conduit; 3. Solar vacuum heat collector; 4. Cold water inlet; 5. Hot water outlet; 6. Electric water heater; 7. Connecting pipe; 8. Solenoid valve; 9. Pump; 10. Sealed insulation cover; 11. Phase change heat storage material.

detailed description

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

Example 1

As shown in Figure 1-2, the utility model provides a phase-change heat storage solar water heater with a waterway unidirectional circulation structure, including a mounting frame 1, a conduit 2 and a solar vacuum heat collection tube 3, and the solar vacuum heat collection tube 3 is installed on On the installation frame 1, a conduit 2 is arranged inside the solar vacuum heat collecting tube 3, and the periphery of the conduit 2 is filled with evenly distributed phase-change heat storage materials 11, and one end of the conduit 2 is provided with a cold water inlet 4, and the other end is provided with a hot water outlet 5. A water pump 9 is installed on the conduit 2. The cold water inlet 4 and the hot water outlet 5 are located on one side of the installation frame 1. The cold water inlet 4 and the hot water outlet 5 are connected through the connecting pipe 7, and the connecting pipe 7 is equipped with an electromagnetic valve 8.

An electric water heater 6 is installed on the hot water outlet 5, and the electric water heater 6 is installed indoors. The water heater can provide hot water by electric heating when the heat stored in the phase change heat storage material is insufficient in continuous rainy weather. The two ends of the solar vacuum heat collecting tube 3 are all equipped with a sealed heat preservation cover, which can seal and insulate the vacuum tube to prevent heat loss. A temperature measuring instrument is installed on the conduit 2, and the temperature measuring instrument is connected with the temperature display screen installed in the room through an optical cable. The temperature measuring instrument can detect the temperature in the vacuum tube. When the temperature is too high, the electromagnetic valve and the water pump can be opened to make the The hot water in the conduit circulates and flows to dissipate heat and cool down. The solenoid valve 8 and the water pump 9 are electrically connected to the power supply through wires respectively. Under normal circumstances, the solenoid valve and the water pump are closed, and the water pump and the solenoid valve are turned on when heat dissipation is required.

Specific working principle: when the device is irradiated by sunlight, the solar vacuum heat collecting tube 3 collects light and heat, and stores the generated heat in the phase change heat storage material 11; when hot water is needed, open the hot water outlet 5 The connected faucet, under the action of water pressure, the water supply pipe connected to the cold water inlet 4 will continue to provide cold water, and when the cold water flows into the conduit 2 inside the solar vacuum heat collection tube 3, it will absorb the heat in the phase change heat storage material 11 , rapid heating, and finally hot water flows out from the hot water outlet 5, thereby providing hot water.

The beneficial effects achieved by the utility model are: the device adopts phase-change materials as the heat storage medium, and its heat storage capacity is several times or higher than that of ordinary solar water heaters with the same volume, and can store more heat in sunny days It is used in case of rainy days; there is no need to set up a separate hot water storage tank, which can greatly reduce the volume of solar water heaters, making the use and installation of solar water heaters more convenient; it is equipped with a waterway one-way circulation structure, which can pass through the circulation structure in continuous high temperature weather Make the hot water in the pipe circulate and dissipate heat, and prevent the solar vacuum heat collection tube from bursting due to excessive temperature.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (5)

1. A phase-change thermal storage solar water heater with a waterway unidirectional circulation structure, including a mounting frame (1), a conduit (2) and a solar vacuum heat collection tube (3), characterized in that the solar vacuum heat collection tube (3 ) is installed on the installation frame (1), the interior of the solar vacuum heat collection tube (3) is provided with the conduit (2), and the periphery of the conduit (2) is filled with evenly distributed phase change heat storage materials (11), one end of the conduit (2) is provided with a cold water inlet (4), the other end is provided with a hot water outlet (5), the conduit (2) is equipped with a pump (9), and the cold water inlet (4) and the hot water outlet (5) are located on one side of the installation frame (1), the cold water inlet (4) and the hot water outlet (5) are connected by a connecting pipe (7), and A solenoid valve (8) is installed on the connecting pipe (7). 2. A phase change heat storage solar water heater with a waterway unidirectional circulation structure according to claim 1, characterized in that an electric water heater (6) is installed on the hot water outlet (5), and the electric water heater Water heater (6) is installed indoors. 3. A phase-change heat storage solar water heater with a waterway unidirectional circulation structure according to claim 1, characterized in that, both ends of the solar vacuum heat collecting tube (3) are equipped with sealed heat preservation covers. 4. A phase-change heat storage solar water heater with a waterway unidirectional circulation structure according to claim 1, characterized in that a temperature measuring instrument is installed on the conduit (2), and the temperature measuring instrument is connected with the installation The temperature display in the room is connected by an optical cable. 5. A phase-change heat storage solar water heater with a waterway one-way circulation structure according to claim 1, characterized in that, the solenoid valve (8) and the water pump (9) are respectively connected to the power supply through wires. sexual connection.