Solar stand-alone hot water module

Abstract

The utility model relates to the technical field of solar single machines, and discloses a solar single machine hot water module which comprises a heating unit used for heating hot water, a heat supply unit used for conveying the hot water and a control unit used for controlling the heating unit and the heat supply unit. A water circulation pipeline is connected between the solar stand-alone body and the heat preservation water tank. According to the utility model, through the arranged backflow assembly, when no terminal user uses hot water, the controller controls the electromagnetic valve on the water supply pipe to be closed, controls the electromagnetic valves on the balance pipe and the water return pipe to be opened, and controls the water return pump to be opened, so that residual hot water in the water supply pipe flows back into the heat preservation water tank; therefore, a user does not need to wait for residual water to flow out when using hot water, water resource waste is reduced, and meanwhile water pipe blockage caused by freezing of residual hot water in the water supply pipe in cold weather is avoided. The arrangement of the balance pipe prevents negative pressure from being generated in the pipeline when hot water flows back.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar stand-alone machines, and specifically relates to a solar stand-alone water heating module. Background Art

[0002] Solar water heater module is a device that uses solar radiation energy as heat source and converts absorbed solar energy into heat energy to heat water. It includes solar thermal collector, heat storage device, circulation pipeline device, etc. Since solar water heater module is greatly affected by weather in its operation throughout the year, its independent application is intermittent, unstable and has regional differences. In addition to using collector to convert solar energy into heat energy, hot water guarantee system (auxiliary heating system) and heat storage measures should be adopted to ensure that solar water heater module can supply hot water stably around the clock. The characteristics of household solar water heater are that users can install and use them independently, and solar water heater modules are relatively simple and do not interfere with each other.

[0003] However, existing solar water heating modules are usually not provided with a hot water reflux unit, so that hot water still remains in the water supply pipe after the hot water supply is stopped, which means that the next time hot water is used, it is necessary to wait until the residual water in the water pipe flows out. This not only wastes resources, but also may cause the residual water to freeze in the pipe in cold weather, affecting the hot water supply.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A solar stand-alone hot water module, comprising a heating unit for heating hot water, a heat supply unit for transporting hot water, and a control unit for controlling the heating unit and the heat supply unit, wherein the heating unit comprises a solar stand-alone main body and a heat preservation water tank, and a water circulation pipeline is connected between the solar stand-alone main body and the heat preservation water tank;

[0007] The heating unit includes a water supply pipe for hot water delivery and a number of user terminals, and a reflux component for hot water reflux in the pipe is also provided between the water supply pipe and the insulated water tank;

[0008] The control unit includes an external controller and a plurality of electromagnetic control valves;

[0009] The solar stand-alone main body is respectively provided with a first water inlet for cold water input and a first water outlet for hot water output, the first water inlet and the first water outlet are respectively connected to a cold water pipe and a hot water pipe, and the cold water pipe and the hot water pipe are both connected to the thermal insulation water tank;

[0010] The insulated water tank is provided with a temperature sensor for constant temperature control and a water level monitoring unit for automatic water replenishment; a second water outlet for hot water output is provided at the bottom of the insulated water tank, and one end of the water supply pipe is connected to the second water outlet;

[0011] A water supply pipe for cold water to enter is arranged on the top of the insulated water tank, and a second water inlet for hot water to return is also arranged on the insulated water tank. The return assembly includes a return pipe and a return pump. One end of the return pipe is connected to the end of the water supply pipe away from the second water outlet, and the end of the return pipe away from the water supply pipe is connected to the inlet end of the return pump, and the outlet end of the return pump is connected to the second water inlet; a balance pipe is also arranged on the end of the water supply pipe close to the second water outlet, and the water supply pipe and the water supply pipe are located at the second water outlet, and the balance pipe and the end of the return pipe close to the return pump are all provided with electromagnetic control valves, and the electromagnetic control valves are all connected to the controller electrical signal;

[0012] The solar energy stand-alone main body and the heat preservation water tank as well as the temperature sensor and the water level monitoring unit on the heat preservation water tank are all connected with the controller by electrical signals.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] Through the set reflux component, when no end user uses hot water, the controller controls the solenoid valve on the water supply pipe to close, and the solenoid valves on the balancing pipe and the return pipe to open, and at the same time controls the return pump to start, so that the residual hot water in the water supply pipe flows back to the insulated water tank, so that users do not need to wait for the residual water to flow out when using hot water, which reduces the waste of water resources and avoids the freezing of residual hot water in the water supply pipe in cold weather and causing blockage of the water pipe; the setting of the balancing pipe avoids the generation of negative pressure in the pipe when hot water flows back.

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the attached picture:

[0017] Figure 1 It is a schematic diagram of the structural principle of the utility model.

[0018] In the figure: 10, solar single machine body; 11, cold water pipe; 12, hot water pipe; 20, insulated water tank; 21, water supply pipe; 22, water supply pipe; 23, return pipe; 24, balance pipe; 25, user terminal; 26, return pump; 30, controller. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0020] A solar stand-alone water heating module, such as Figure 1 As shown, it includes a heating unit for hot water heating, a heat supply unit for hot water delivery, and a control unit for controlling the heating unit and the heat supply unit. The heating unit includes a solar stand-alone main body 10 and a heat preservation water tank 20. A water circulation pipeline is connected between the solar stand-alone main body 10 and the heat preservation water tank 20.

[0021] like Figure 1 As shown, the heating unit includes a water supply pipe 21 for hot water delivery and a plurality of user terminals 25, and a reflux component for hot water reflux in the pipe is also provided between the water supply pipe 21 and the insulated water tank 20;

[0022] like Figure 1 As shown, the control unit includes an external controller 30 and a plurality of electromagnetic control valves.

[0023] like Figure 1 As shown, the solar stand-alone main body 10 is respectively provided with a first water inlet for cold water input and a first water outlet for hot water output, the first water inlet and the first water outlet are respectively connected to a cold water pipe 11 and a hot water pipe 12, and the cold water pipe 11 and the hot water pipe 12 are both connected to the insulated water tank 20.

[0024] like Figure 1 As shown, the insulated water tank 20 is provided with a temperature sensor for constant temperature control and a water level monitoring unit for automatic water replenishment.

[0025] like Figure 1 As shown, a second water outlet for hot water output is provided at the bottom of the thermal insulation water tank 20, and one end of the water supply pipe 21 is connected to the second water outlet.

[0026] like Figure 1 As shown, a water supply pipe 22 for cold water to enter is arranged on the top of the insulated water tank 20, and a second water inlet for hot water to return is also arranged on the insulated water tank 20. The reflux component includes a return pipe 23 and a return pump 26. One end of the return pipe 23 is connected to an end of the water supply pipe 21 away from the second water outlet, and the end of the return pipe 23 away from the water supply pipe 21 is connected to the inlet end of the return pump 26, and the outlet end of the return pump 26 is connected to the second water inlet.

[0027] like Figure 1As shown, a balancing pipe 24 is also provided on the water supply pipe 21 near the second water outlet, and the water replenishment pipe 22 and the water supply pipe 21 are located at the second water outlet, and the balancing pipe 24 and the return pipe 23 are provided with electromagnetic control valves at one end near the return pump 26, and the electromagnetic control valves are all connected to the controller 30 with electrical signals.

[0028] like Figure 1 As shown, the solar stand-alone main body 10 and the insulated water tank 20 as well as the temperature sensor and the water level monitoring unit on the insulated water tank 20 are all connected to the controller 30 via electrical signals.

[0029] Working principle: through the set reflux component, when no end user uses hot water, the controller 30 controls the solenoid valve on the water supply pipe 21 to close, and the solenoid valves on the balancing pipe 24 and the return pipe 23 to open, and at the same time controls the return pump 26 to open, so that the residual hot water in the water supply pipe 21 flows back to the insulated water tank 20, so that users do not need to wait for the residual water to flow out when using hot water, reducing the waste of water resources while avoiding the freezing of residual hot water in the water supply pipe 21 in cold weather and causing blockage of the water pipe; the setting of the balancing pipe 24 avoids the generation of negative pressure in the pipeline when hot water flows back.

[0030] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A solar stand-alone water heating module, comprising a heating unit for heating hot water, a heat supply unit for hot water delivery, and a control unit for controlling the heating unit and the heat supply unit, characterized in that: The heating unit comprises a solar energy stand-alone main body (10) and a heat preservation water tank (20), and a water circulation pipeline is connected between the solar energy stand-alone main body (10) and the heat preservation water tank (20); The heating unit comprises a water supply pipe (21) for hot water transportation and a plurality of user terminals (25), and a reflux component for hot water reflux in the pipe is also provided between the water supply pipe (21) and the heat preservation water tank (20); The control unit includes an external controller (30) and a plurality of electromagnetic control valves; The solar energy stand-alone main body (10) is respectively provided with a first water inlet for cold water input and a first water outlet for hot water output, the first water inlet and the first water outlet are respectively connected to a cold water pipe (11) and a hot water pipe (12), and the cold water pipe (11) and the hot water pipe (12) are both connected to a heat preservation water tank (20); The thermal insulation water tank (20) is provided with a temperature sensor for constant temperature control and a water level monitoring unit for automatic water replenishment; a second water outlet for hot water output is provided at the bottom of the thermal insulation water tank (20), and one end of the water supply pipe (21) is connected to the second water outlet; A water supply pipe (22) for cold water to enter is arranged at the top of the thermal insulation water tank (20), and a second water inlet for hot water to return is also arranged on the thermal insulation water tank (20). The return assembly comprises a return pipe (23) and a return pump (26), one end of the return pipe (23) is connected to the end of the water supply pipe (21) away from the second water outlet, the end of the return pipe (23) away from the water supply pipe (21) is connected to the inlet end of the return pump (26), and the outlet end of the return pump (26) is connected to the second water inlet; a balance pipe (24) is also arranged on the end of the water supply pipe (21) close to the second water outlet, and electromagnetic control valves are arranged on the water supply pipe (22), the water supply pipe (21) located at the second water outlet, and the balance pipe (24) and the return pipe (23) close to the return pump (26), and the electromagnetic control valves are all connected to the controller (30) via electrical signals; The solar energy stand-alone main body (10) and the heat preservation water tank (20) as well as the temperature sensor and the water level monitoring unit on the heat preservation water tank (20) are all connected to the controller (30) via electrical signals.

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