CN204442233U - A kind of solar energy heating electrification component with heat collection water tank - Google Patents

Abstract

The utility model discloses a solar heat collection power generation assembly with a water collection tank, which belongs to the field of solar energy utilization. The thermal power generation assembly of the utility model includes a frame, a photovoltaic assembly, a hot water tank and a thermoelectric assembly. The back plate in the photovoltaic assembly is attached to the upper surface of the hot water tank through thermal conductive glue, and the EVA filling layer is arranged on the upper glass cover plate. Between the solar cells and the back plate, the solar cells are evenly distributed in the EVA filling layer; the thermoelectric assembly includes a back-sealing plate and a thermoelectric power generation piece, and the thermoelectric power generation piece is pressed against the lower surface of the water collection tank by the back-sealing plate, and the thermoelectric power generation piece Both sides are filled with heat-conducting glue; the photovoltaic module, the collector tank and the thermoelectric module are pressed and fixed through the frame. The utility model simplifies the structure of the heat collection power generation assembly, realizes the functions of photovoltaic power generation, thermoelectric power generation and light energy heating through the organic combination of various devices, increases the utilization rate of solar energy, improves the efficiency of heat collection power generation, and reduces the cost.

Description

A solar thermal power generation assembly with a hot water tank

technical field

The utility model relates to the technical field of solar energy utilization, in particular to a solar heat collection power generation assembly with a water collection tank.

Background technique

Solar heat collection technology is constantly developing and innovating, and is widely used in various fields of the national economy. Especially in the civil field, the application of solar cookers has been recognized by people, bringing real convenience to people's lives. The principle of ordinary solar photovoltaic cell power generation is that sunlight shines on the photovoltaic cell through the cover plate and EVA. After the photovoltaic cell absorbs the transmitted sunlight energy, less than 20% of it is converted into electrical energy, and the rest is converted into heat and absorbed by the battery module. , and finally lost in the air. If it cannot be utilized, on the one hand, it will cause a large waste, on the other hand, the heat absorbed by the photovoltaic module will increase the temperature of the battery panel, reduce the power generation efficiency and shorten the life of the battery module.

Following the development trend of national policies, civilian solar photovoltaic power generation systems will become common household appliances, and solar photovoltaic power generation systems will develop towards diversified developments such as power generation, hot water, and cooking. At present, the existing solar photovoltaic power generation system has the function of generating electricity and hot water at the same time, but lacks an effective combination with other solar energy utilization devices, and cannot maximize the use of solar energy in life. For example, Chinese patent application number: 201320450118.5, Application date: July 26, 2013. The name of the invention is: a solar photovoltaic-photothermal-thermoelectric comprehensive utilization system. The application discloses a solar photovoltaic-photothermal-thermoelectric comprehensive utilization system, including a collector , photothermal insulation bucket assembly and photovoltaic thermoelectric control circuit, the glass cover plate in the collector, EVA filling layer, back plate, first heat transfer plate, thermoelectric chip, second heat transfer plate, and heat insulation material layer pass through the aluminum alloy frame Laminated and fixed; photothermal heat preservation barrel assembly includes the first water pump, the second water pump, the first stage heat preservation barrel, water level and temperature sensor, temperature control device, solenoid valve, second stage heat preservation barrel and auxiliary heating device, the second stage heat preservation There is an auxiliary heating device inside the bucket; the solar cells in the collector are connected in parallel with the thermoelectric chip and then connected to the controller, the controller is connected to the battery and the inverter respectively, and the inverter is connected to the load. This patented solution can generate power and heat water at the same time, but the system structure is complex, lacks concentrating equipment, and has limited utilization of solar energy, and more heat is lost during hot water transmission.

Another example is the Chinese patent application number: 201420221311.6, application date: April 30, 2014, and the name of the invention is: a solar cooker concentrating photovoltaic photothermal power generation comprehensive utilization device. The application includes photovoltaic photothermal temperature difference power generation boilers, Concentrating solar cooker and solar cooker and boiler support components, the concentrated solar cooker reflects the collected sunlight to the photovoltaic photothermal temperature difference power generation boiler; the top photovoltaic power generation module and the bottom photovoltaic power generation collector are respectively located on the top of the furnace body And the bottom, there is also a temperature difference power generation sheet between the bottom photovoltaic power generation heat collector and the furnace body, all of which are used for solar photovoltaic power generation. This patent scheme combines the heat collector with the furnace body, and uses the solar cooker to gather light energy. However, the photovoltaic modules in this scheme are directly fixed on the upper and lower ends of the boiler, and affected by the height of the boiler itself, the circulation efficiency of hot water inside the boiler is low.

In addition, the application number of the application number 2015100446498 submitted by the applicant of this solution on January 28, 2015 also involves the application of solar photovoltaic-photothermal-thermoelectric technology, but after many explorations by the inventor, it is found that the solution There are still the following disadvantages: 1) The contact area between the hot water pipe and the thermoelectric power generation sheet is limited, the thermoelectric power generation efficiency is low, and the water pipe cannot absorb heat to the maximum; The heat absorbed by the tube per unit time is limited, and the remaining heat remains inside the collector assembly to increase the temperature of the assembly, which will have the side effect of reducing the efficiency and life of the collector assembly. Based on the above reasons, the inventors of the present solution made several explorations and improvements to the original solution in order to obtain better utilization of solar energy.

Utility model content

1. The technical problems to be solved by the utility model

The purpose of this utility model is to overcome the shortcomings of complex structure and low efficiency of power generation and heat collection of the heat collection power generation assembly of the solar energy comprehensive utilization device in the prior art, and provide a solar heat collection power generation assembly with a water collection tank. The utility model The technical scheme simplifies the internal structure and system composition of thermal power generation components. Through the organic combination of various parts, the functions of photovoltaic power generation, thermoelectric power generation and solar heating are realized, the utilization rate of solar energy is increased, and the efficiency of thermal power generation is improved. , reducing costs.

2. Technical solution

In order to achieve the above object, the technical solution provided by the utility model is:

A solar thermal power generation assembly with a water collection tank of the present utility model includes a heat collection power generation assembly, and the heat collection power generation assembly includes a frame, a photovoltaic assembly, a water collection tank and a thermoelectric assembly, wherein:

The photovoltaic module includes solar cells, EVA filling layer, upper glass cover plate and back plate. Between them, the solar cells are evenly distributed in the EVA filling layer; the thermoelectric assembly includes a back-sealing plate and a thermoelectric power generation piece, and the thermoelectric power generation piece is pressed against the lower surface of the water collection tank by the back-sealing plate, and generates electricity under the temperature difference Both sides of the sheet are filled with heat-conducting glue; the photovoltaic module, the water collection tank and the thermoelectric module are pressed and fixed through the frame.

As a further improvement of the utility model, an upper water level sensor is provided at the water inlet end of the water collecting tank, and a water inlet solenoid valve is arranged on the water delivery pipe of the water collecting end of the water collecting tank; There is a temperature and lower water level sensor, and a drain solenoid valve is installed on the water delivery pipe at the drain end of the hot water tank. The water inlet solenoid valve, drain solenoid valve, upper water level sensor and temperature and lower water level sensor are all connected The device is electrically connected.

As a further improvement of the utility model, the hot water tank and the back sealing plate are made of stainless steel, and the outer surface of the back sealing plate is provided with a black coating.

As a further improvement of the utility model, the outer surface of the water delivery pipe is wrapped with a layer of thermal insulation material.

3. Beneficial effect

Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

(1) A solar thermal power generation assembly with a hot water tank of the utility model replaces the traditional boiler and hot water pipe with a hot water tank in the middle of the thermal power generation component, which not only increases the heat collection tank The contact area with the thermoelectric power generation sheet increases the heating area of the hot water tank itself and speeds up the thermal cycle, so that the heat collection power generation component has higher power generation and heat collection efficiency;

(2) A kind of solar thermal power generation assembly with a hot water tank of the utility model is provided with an upper water level sensor and a water inlet electromagnetic valve at the water inlet end of the hot water tank, and at the drain end of the hot water tank It is equipped with a temperature and water level sensor and a drain solenoid valve, which connects the water inlet to the tap water supply system, so that it can work by itself according to the set temperature, without the need for a water pump to supply water, and has a high degree of automation;

(3) A solar thermal power generation assembly with a hot water tank of the utility model, the hot water tank and the back seal plate are made of stainless steel, the stainless steel has high heat conduction efficiency, and the back seal with black coating is adopted The plate absorbs heat, which further improves the heat collection and power generation efficiency of the heat collection and power generation components.

Description of drawings

Fig. 1 is a side view structural schematic diagram of a solar thermal power generation assembly with a hot water tank of the utility model;

Fig. 2 is a schematic diagram of the internal structure of the heat collection and power generation assembly of the present invention.

Explanation of the symbols in the schematic diagram: 2. Thermal power generation module; 2-1. Frame; 2-2. Solar cells; 2-3. EVA filling layer; 2-4. Upper glass cover plate; 2-5. Back seal Plate; 2-6, thermoelectric power generation sheet; 2-7, hot water tank; 2-8, back plate; 5-1, drain solenoid valve; 5-2, water inlet solenoid valve; 6-1, temperature and lower Water level sensor; 6-2, upper water level sensor.

Detailed ways

In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

Example 1

Referring to Fig. 1 and Fig. 2, a solar thermal power generation assembly with a hot water tank in this embodiment includes a heat collection power generation assembly 2, and the key point in this embodiment is the adoption of a new type of heat collection power generation assembly 2 , and optimize the corresponding components according to the structural characteristics of the thermal power generation assembly 2 . The thermal power generation assembly 2 includes a frame 2-1, a photovoltaic assembly, a hot water tank 2-7, and a thermoelectric assembly, and the photovoltaic assembly, the water collection tank 2-7, and the thermoelectric assembly are pressed and fixed through the frame 2-1, in:

The photovoltaic module includes solar cells 2-2, EVA filling layer 2-3, upper glass cover plate 2-4 and back plate 2-8, and the above-mentioned back plate 2-8 is attached to the hot water tank 2-7 by heat-conducting adhesive On the upper surface, the EVA filling layer 2-3 is arranged between the upper glass cover plate 2-4 and the back plate 2-8, the solar cells 2-2 are evenly distributed in the EVA filling layer 2-3, and the solar cells 2- 2 The output terminal is connected to the power storage system. The thermoelectric assembly includes a back sealing plate 2-5 and a thermoelectric power generation sheet 2-6, and the thermoelectric power generation sheet 2-6 is pressed against the lower surface of the hot water tank 2-7 by the back sealing plate 2-5, and each thermoelectric power generation sheet 2 -6 connected in series to the power storage system. In addition, heat conductive glue is filled on both sides of the thermoelectric generation sheet 2-6 to ensure that the two sides of the thermoelectric generation sheet 2-6 are in close contact with the hot water tank 2-7 and the back sealing plate 2-5 respectively, so that the thermoelectric generation sheet 2-6 The temperature difference between the two sides can be quickly sensed, and when the temperature difference reaches a certain range, the thermoelectric power generation sheets 2-6 can be used to generate electricity. In addition, in order to transfer heat quickly, the hot water tank 2-7 and the back sealing plate 2-5 are made of stainless steel, which has good heat conduction effect, and the outer surface of the back sealing plate 2-5 is provided with a black coating, which is It helps it to absorb solar energy faster, and further improves the heat collection and power generation efficiency of the system.

The water inlet end of the hot water tank 2-7 in this embodiment is provided with an upper water level sensor 6-2, and an inlet electromagnetic valve 5-2 is set on the water delivery pipe of the water inlet end of the hot water tank 2-7; The drain end of the hot water tank 2-7 is provided with a temperature and water level sensor 6-1, and a drain solenoid valve 5-1 is set on the water delivery pipe at the drain end of the hot water tank 2-7, wherein the water inlet solenoid valve 5- 2. The drain solenoid valve 5-1, the upper water level sensor 6-2 and the temperature and lower water level sensor 6-1 are all electrically connected to the control device in the system.

In the prior art, solar energy comprehensive utilization devices with photovoltaic, photothermal, and thermoelectric functions mostly adopt a solar cooker structure, and use the light concentrating effect of the solar cooker as the heat collecting power generation module 2. After research, it is found that the light concentrating effect of the solar cooker is relatively low. Strong, the light-gathering point is mostly located at the same position on the thermal power generation assembly 2 during work, which often causes photothermal fatigue damage to the thermal power generation assembly 2 and reduces the service life of the thermal power generation assembly 2. However, the heat collecting power generation module 2 in this embodiment is used in combination with a plane mirror concentrating device, which converges the light, but does not produce a focusing phenomenon, but uses the superposition of parallel light to achieve the effect of converging light, and the photothermal Uniform, little damage to the thermal power generation assembly 2.

The heat collector assembly (that is, the heat collection power generation assembly 2 in this embodiment) is the core component of the entire system, which determines the comprehensive performance of Tianyang Energy's comprehensive utilization device, and the heat collector assembly in the prior art has many defects . On the one hand, most common collector components are equipped with battery power generation pieces and thermoelectric power generation pieces on one side at the same time. This structure is not conducive to the work of thermoelectric power generation pieces. The temperature difference between the two sides of the sheet is not obvious, and the power generation efficiency is reduced; on the other hand, due to the influence of the height of the traditional boiler-type water storage and heat collection device, the water-heat circulation inside the boiler is slow, and it is difficult to heat quickly; the coil-type water storage and heat collection device Due to the structure of the tube body, the thermal device has a small contact surface with the thermoelectric power generation sheet, the thermoelectric power generation efficiency is low, and the heating area of the coil is limited. In the heat-collecting power generation assembly 2 in this embodiment, the photovoltaic assembly is arranged on the upper surface of the water collection tank 2-7, the thermoelectric assembly is arranged on the lower surface of the water collection tank 2-7, and the photovoltaic assembly and the thermoelectric assembly are separately arranged. No influence on each other; the flat hot water tank 2-7 is used as the water storage and heat collection device, so that the heating area on the upper and lower sides of the hot water tank 2-7 is larger, the heat distribution on the surface is more uniform, and the water heat cycle is faster ; In addition, the planar structure helps the lower surface of the hot water tank 2-7 and the thermoelectric power generation sheet 2-6 to be fully bonded, further improving the power generation efficiency.

In order to avoid energy loss and save costs, the hot water transmission pipeline of this embodiment is also simplified, through the water inlet solenoid valve 5-2, drain solenoid valve 5-1, upper water level sensor 6-2 and temperature and lower water level Sensor 6-1 can directly control the replacement of cold and hot water in the hot water tank 2-7. During work, the water inlet pipe of the water collecting tank 2-7 is connected with the tap water supply system, the control device controls the water inlet electromagnetic valve 5-2 to open, and water starts to enter in the collecting water tank 2-7. When the water level in the hot water tank 2-7 reaches the designated position, the upper water level sensor 6-2 transmits the signal to the control device, and the control device adjusts the water inlet solenoid valve 5-2 to close; The internal water temperature rises, and the temperature is detected and judged by the temperature and water level sensor 6-1. When the water temperature reaches the requirement, the temperature and water level sensor 6-1 transmits the signal to the control device, and the control device drives the drain solenoid valve 5- 1 is turned on, and hot water starts to be discharged; when the temperature and water level sensor 6-1 detects that the hot water has been discharged, the signal is transmitted to the control device, and the control device drives the drain solenoid valve 5-1 to close, and then opens the water inlet solenoid valve. Valve 5-2 is for the next water intake and heating, the whole process is efficient and simple, with less heat loss.

The heat collection power generation assembly 2 of this embodiment performs photovoltaic power generation, thermoelectric power generation and light energy heating with a simpler structure, so that solar energy can be effectively used in daily life, increasing the utilization rate of solar energy, improving the efficiency of heat collection and power generation, and reducing costs.

The above schematically describes the utility model and its implementation, which is not restrictive, and what is shown in the accompanying drawings is only one implementation of the utility model, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, and without departing from the purpose of the invention of the utility model, without creatively designing a structural mode and an embodiment similar to the technical solution, it shall belong to the utility model. protected range.

Claims (4)

1. the solar energy heating electrification component with heat collection water tank, comprise thermal-arrest electrification component (2), it is characterized in that: described thermal-arrest electrification component (2) comprises frame (2-1), photovoltaic module, heat collection water tank (2-7) and thermoelectric components, wherein:

Described photovoltaic module comprises solar battery sheet (2-2), EVA packed layer (2-3), upper glass cover-plate (2-4) and backboard (2-8), described backboard (2-8) is attached to heat collection water tank (2-7) upper surface by heat-conducting glue, EVA packed layer (2-3) is arranged between glass cover-plate (2-4) and backboard (2-8), and solar battery sheet (2-2) is evenly distributed in EVA packed layer (2-3); Described thermoelectric components comprises back of the body shrouding (2-5) and thermo-electric generation sheet (2-6), described thermo-electric generation sheet (2-6) is pressed against heat collection water tank (2-7) lower surface by back of the body shrouding (2-5), and fills heat-conducting glue in thermo-electric generation sheet (2-6) both sides; By frame (2-1), photovoltaic module, heat collection water tank (2-7) and thermoelectric components lamination are fixed.

2. a kind of solar energy heating electrification component with heat collection water tank according to claim 1, it is characterized in that: described heat collection water tank (2-7) water inlet end is provided with level sensor (6-2), and entering water electromagnetic valve (5-2) is set on heat collection water tank (2-7) water inlet end water-supply-pipe; Heat collection water tank (2-7) discharge ends is provided with the double lower level sensor (6-1) of temperature, and drain solenoid valve (5-1) is set on heat collection water tank (2-7) discharge ends water-supply-pipe, the double lower level sensor (6-1) of described entering water electromagnetic valve (5-2), drain solenoid valve (5-1), upper level sensor (6-2) and temperature is all electrically connected with the control device in thermal-arrest electrification component (2).

3. a kind of solar energy heating electrification component with heat collection water tank according to claim 2, it is characterized in that: described heat collection water tank (2-7) and back of the body shrouding (2-5) are stainless steel, and back of the body shrouding (2-5) outer surface is provided with black coating.

4. a kind of solar energy heating electrification component with heat collection water tank according to claim 3, is characterized in that: described water-supply-pipe outer surface is enclosed with adiabator layer.