CN210772884U - Air source heat pump efficiency improving system based on wind-solar complementation - Google Patents

Abstract

The utility model discloses an air-source heat pump efficiency improvement system based on wind-solar complementarity, comprising a fan group and a heating furnace; the heating furnace is correspondingly arranged below the fan group, and the heating furnace and the fan group are connected by a speed increasing device; The furnace includes a cylinder, a transmission shaft, a stator unit and fins; an air inlet is arranged at the bottom of the cylinder and an air outlet is arranged at the top; a semiconductor heating structure is arranged in the cylinder and a PV/T heat collector is arranged on the outer side of the cylinder; The fins are located between the stator and the rotor; the air at the second fan-driven air inlet is heated once by the heat collecting component, and then passes through the semiconductor heating structure and the fin area to achieve three-stage heating; Therefore, the operating efficiency of the heat pump is significantly improved, and the applicable temperature range of the air source heat pump is expanded.

Description

Air-source heat pump efficiency improvement system based on wind-solar hybrid

technical field

The utility model relates to the field of heat pumps, in particular to an air source heat pump efficiency improvement system based on wind and solar complementation.

Background technique

In northern my country, the temperature is low in winter, and the heating and domestic hot water use by residents is large, which is mainly provided by thermal power plants. The primary energy consumption is large and the environmental pollution is serious. With the continuous advancement of the country's "coal-to-electricity" and "coal-to-clean energy", air source heat pumps have developed rapidly in the field of commercial and residential air-conditioning due to their high efficiency, environmental protection, safety and reliability. It keeps decreasing as the ambient temperature decreases. In extremely cold regions in the north, especially when the ambient temperature is lower than -10°C, the heating capacity and efficiency of the unit drop significantly, and it cannot even be started at -20°C, which greatly limits its scope of application.

There are abundant solar and wind energy resources in the northern region. At present, the utilization of solar energy can be divided into photovoltaic and photothermal utilization. The traditional photovoltaic power generation system has low utilization efficiency. If the solar photovoltaic/thermal technology (ie PV/T technology) is fully utilized, the energy loss can be reduced and the utilization rate of solar energy can be improved. As a kind of clean and renewable energy, wind energy has been paid more and more attention by all countries. The total amount of wind energy in the world is about 2.74×109MW. The energy obtained by burning coal every year in the world is only 1/1 of the energy provided by wind in one year. 3.

At present, the latest technology of domestic wind energy heating is eddy current heating. A rotor is driven by the power output shaft of the wind turbine, and a permanent magnet is installed between the outer edge of the output shaft and the stator. When the rotor rotates at high speed, a changing magnetic field is generated. According to Faraday electromagnetic induction According to the law, the metal stator is affected by the changing magnetic field to generate eddy current, which then causes the metal stator to generate heat and heat to generate eddy current.

Considering the characteristics of abundant solar energy and wind energy resources in the north, and low requirements for building sanitary conditions in the northern suburbs and towns, this project plans to use wind energy as the power source of the air heating furnace, and use wind power instead of the motor as the power source of the air heating furnace. The aerodynamic heating furnace provides power; based on the principle of energy cascade utilization, solar photovoltaic/photothermal technology (ie PV/T technology) is introduced into the system to improve the comprehensive utilization efficiency of solar energy. The advantages of wind energy and solar energy are combined, so as to realize the direct conversion of wind energy and light energy into heat energy and reduce the secondary loss of energy conversion into electric energy.

Therefore, it is necessary to invent an air-source heat pump efficiency improvement system based on wind-solar hybridization with strong environmental adaptability and stable operation.

SUMMARY OF THE INVENTION

Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides an air source heat pump efficiency improvement system based on wind and solar complementarity with strong environmental adaptability and stable operation.

Technical scheme: In order to achieve the above purpose, the air-source heat pump efficiency improvement system based on wind and solar complementation of the present invention includes a fan group and a heating furnace; the heating furnace is correspondingly arranged below the fan group; the heating furnace includes a cylinder body, a transmission shaft, stator unit, fins and rotor unit; the transmission shaft is arranged inside the cylinder body and is connected with the rotating shaft of the fan group; the rotor unit is installed on the transmission shaft; the stator unit is fixedly arranged on the inner wall of the cylinder The fins are correspondingly arranged between the rotor unit and the stator unit; the fins are connected with the stator unit; the top of the cylinder is provided with an air outlet, and the bottom is provided with an air inlet; A fan; the first fan is arranged above the fins, and the air inlet direction corresponds to the inside of the cylinder below; the first fan drives the air at the air inlet to pass through the fin area and reach the air outlet.

Further, the fan group includes an S-shaped fan and an H-shaped fan; the S-shaped fan is coaxially installed above the H-shaped fan, and the two rotate synchronously.

Further, a throttle orifice plate is arranged between the first fan and the fins; a plurality of ventilation holes are evenly arranged on the throttle orifice plate; a second fan is arranged under the fins; the second fan The direction of exhaust air points to the air outlet.

Further, a protective plate is arranged at intervals above the cylinder; the air outlet is correspondingly arranged in the gap between the protective plate and the top of the cylinder; the projection of the protective plate in the vertical direction is larger than the top opening of the cylinder place.

Further, the fin includes a plurality of fins; the fins are placed vertically; a plurality of the fins are evenly spaced from each other, and are arranged on the stator unit in an annular connection.

Further, a PV/T heat collecting assembly is also included; the heat output end of the PV/T heat collecting assembly corresponds to the air inlet path of the cylinder.

Further, the inside of the cylinder is provided with a semiconductor heating assembly; the semiconductor heating assembly is located under the fins; the semiconductor heating assembly corresponds to the position of the air circulation path; the power input end of the semiconductor heating assembly is connected to the PV/T collector. The power output end of the thermal component is electrically connected.

Beneficial effects: the air-source heat pump efficiency improvement system based on wind and solar complementation of the present invention includes a fan group and a heating furnace; the heating furnace is correspondingly arranged below the fan group, and the heating furnace and the fan group are connected by a speed increasing device; The heating furnace includes a cylinder body, a transmission shaft, a stator unit and fins; an air inlet is arranged at the bottom of the cylinder body, and an air outlet is arranged at the top; a semiconductor heating structure is arranged in the cylinder body and a PV/T heat collector is arranged on the outer side of the cylinder body The fin is located between the stator and the rotor; the air at the second fan-driven air inlet is heated once by the heat collecting component, and then passes through the semiconductor heating structure and the fin area to achieve three-stage heating; Inlet air temperature, thereby significantly improving the operating efficiency of the heat pump and expanding the applicable temperature range of the air source heat pump.

Description of drawings

Accompanying drawing 1 is the overall structure schematic diagram of heat pump efficiency improvement system;

Figure 2 is a schematic diagram of the internal cross-section of the heat pump efficiency improvement system.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

The air-source heat pump efficiency improvement system based on wind-solar complementarity includes a fan group 1 and a heating furnace 2; the heating furnace 2 is correspondingly arranged below the fan group 1; the heating furnace 2 includes a cylinder 21, a transmission shaft 22, and a stator unit 23 , fins 24 and rotor unit; the transmission shaft 22 is arranged inside the cylinder 21, and is connected with the rotating shaft of the fan group 1 through a force-enhancing clutch. The force-enhancing clutch can be purchased directly and will not be repeated here; the rotor The unit is installed on the transmission shaft 22; the stator unit 23 is fixedly arranged on the inner wall of the cylinder 21; the fins 24 are correspondingly arranged between the rotor unit and the stator unit 23; the fins 24 are connected with the stator unit 23; The cylinder body 21 is provided with an air outlet 25 at the top and an air inlet at the bottom; a first fan 201 is provided at the upper end of the cylinder body 21; The first fan 201 drives the air at the air inlet to pass through the area of the fins 24 to reach the air outlet; the stator in the stator unit 23 is made of 45 steel soft magnetic material, and the rotor unit rotates with the drive shaft 22 , the metal stator is affected by the changing magnetic field to generate eddy currents, and the flow then makes the metal stator generate heat and heat to generate eddy current heating, so that the air in the cylinder 21 can be heated;

The fan group 1 includes an S-shaped fan 11 and an H-shaped fan 12; the S-shaped fan 11 is coaxially installed above the H-shaped fan 12, and the two rotate synchronously; the H-shaped blade is simple in form and low in cost, but due to the H-shaped fan The self-starting performance of the heat pump type is poor at low wind speed, so on the basis of the existing H-type fan, an auxiliary S-type fan is added as an auxiliary start-up, which significantly enhances the adaptability of the heat pump efficiency improvement system to the working environment.

An orifice plate 27 is arranged between the first fan 201 and the fins 24 ; a plurality of ventilation holes 271 are evenly arranged on the orifice plate 27 ; a second fan 202 is arranged below the fins 24 ; The exhaust direction of the second fan 202 points to the air outlet; the fins 24 include a plurality of fins 241; the fins 241 are placed vertically; a plurality of the fins 241 are evenly spaced from each other, and are arranged in a ring-shaped connection on the stator unit 23; the heated air passes through the gap between the fins 241; the warm air passing through the fins is not uniform enough after being separated by the gap; the throttling orifice plate 27 uses the buffering and stagnation effect of the plate surface to allow The air leaves the heating furnace area more evenly through the ventilation holes, thereby improving the stability of the air outlet; at the same time, adding a filter screen structure in the ventilation holes 271 can further realize the dustproof effect, thereby reducing the failure rate of the heat pump equipment. maintenance costs.

A protective plate 28 is provided at intervals above the cylinder body 21; the air outlet 25 is correspondingly arranged in the gap between the protective plate 28 and the top of the cylinder body 21; the projection of the protective plate 28 in the vertical direction is larger than that of the cylinder body The top opening of 21; the protective plate 28 can effectively prevent the bird droppings above the cylinder 21, the stones entrained in the wind or other garbage from directly falling on the surface of the cylinder 21 or damage the air outlet structure, which improves the operating safety of the system And stability, the protective plate 28 can be removed directly when cleaning is required. Compared with the cleaning operation of climbing to the top of the cylinder body 21, the safety is higher and the operation is more convenient.

It also includes a PV/T heat collecting assembly 7; the heat output end of the PV/T heat collecting assembly 7 corresponds to the air inlet path of the cylinder 21; the heat collector takes away the generated heat in time through the air medium, controlling the The working temperature of the solar cell can provide electricity more efficiently, and the heat taken away is also effectively used, realizing the photovoltaic and photothermal conversion of solar energy in different bands, and improving the comprehensive utilization efficiency of solar energy; the heat collector component can be purchased from the market. Obtained, again without repeating;

The inside of the barrel 21 is provided with a semiconductor heating element 9; the semiconductor heating is a technology based on the Peltier effect, and the working principle is: when the N-type and P-type semiconductor elements are connected into a galvanic pair and the two semiconductor elements are connected When the DC power is applied, one end of the galvanic pair will absorb heat and gradually become cold, this semiconductor end is called the cold end; the other end will release heat and become hot, which is called the hot end; At the bottom of the cylinder body 21, the hot end fins are placed inside the cylinder, and the cold end fins are placed outside the cylinder, and the semiconductors are heated by the electric energy produced by the photovoltaic effect, thereby further increasing the air temperature; the semiconductor components used therein can be purchased;

The semiconductor heating element 9 is located under the fins 24; the semiconductor heating element 9 corresponds to the position of the air circulation path; the power input end of the semiconductor heating element 9 is electrically connected with the power output end of the PV/T heat collecting element 7 .

The above is only the preferred embodiment of the present utility model, it should be pointed out that: for those skilled in the art, without departing from the principle of the present utility model, several improvements and modifications can also be made. These improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (7)

1. Air source heat pump efficiency improving system based on wind-solar complementation is characterized in that: comprises a fan set (1) and a heating furnace (2); the heating furnace (2) is correspondingly arranged below the fan set (1); the heating furnace (2) comprises a cylinder (21), a transmission shaft (22), a stator unit (23), fins (24) and a rotor unit; the transmission shaft (22) is arranged in the cylinder (21) and is connected with a rotating shaft of the fan set (1) in a matching way; the rotor unit is mounted on a drive shaft (22); the stator unit (23) is fixedly arranged on the inner wall of the cylinder (21); the fins (24) are correspondingly arranged between the rotor unit and the stator unit (23); the fins (24) are connected with the stator unit (23); the top of the cylinder body (21) is provided with an air outlet (25), and the bottom of the cylinder body is provided with an air inlet; a first fan (201) is arranged at the upper end in the barrel (21); the first fan (201) is arranged above the fins (24), and the air inlet direction corresponds to the interior of the lower barrel (21); the first fan (201) drives air at the air inlet to pass through the area of the fins (24) and reach the air outlet.

2. The wind-solar complementary based air-source heat pump efficiency improvement system of claim 1, characterized in that: the fan set (1) comprises an S-shaped fan (11) and an H-shaped fan (12); the S-shaped fan (11) is coaxially arranged above the H-shaped fan (12) and rotates synchronously.

3. The wind-solar complementary based air-source heat pump efficiency improvement system according to any one of claims 1-2, characterized in that: a throttling pore plate (27) is arranged between the first fan (201) and the fin (24); a plurality of vent holes (271) are uniformly formed in the throttling orifice plate (27); a second fan (202) is arranged below the fin (24); the air exhaust direction of the second fan (202) points to the air outlet.

4. The wind-solar complementary based air-source heat pump efficiency improvement system of claim 1, characterized in that: protection plates (28) are arranged above the barrel body (21) at intervals; the air outlet (25) is correspondingly arranged in a gap between the protection plate (28) and the top of the cylinder body (21); the projection of the protection plate (28) in the vertical direction is larger than the top opening of the cylinder body (21).

5. The wind-solar complementary based air-source heat pump efficiency improvement system of claim 1, characterized in that: the fin (24) comprises a plurality of sheet bodies (241); the sheet body (241) is vertically placed; a plurality of the sheet bodies (241) are uniformly spaced from each other and are annularly connected and arranged on the stator unit (23).

6. The wind-solar complementary based air-source heat pump efficiency improvement system of claim 1, characterized in that: also comprises a PV/T heat collecting component (7); the heat output end of the PV/T heat collection component (7) corresponds to the air inlet path of the cylinder (21).

7. The wind-solar complementary based air-source heat pump efficiency improvement system of claim 6, characterized in that: a semiconductor heating component (9) is arranged in the cylinder body (21); the semiconductor heating component (9) is positioned below the fins (24); the semiconductor heating component (9) corresponds to the position of an air circulation path; the power input end of the semiconductor heating assembly (9) is electrically connected with the power output end of the PV/T heat collection assembly (7).

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