Air source heat pump output waste energy utilization device

Abstract

The utility model provides an air source heat pump output waste energy utilization device which comprises an air source heat pump, the air source heat pump comprises a shell, an axial flow fan is arranged on the top of the shell, a supporting protection net is arranged on the outer side of the axial flow fan, a generator is arranged on the top of the inner side of the supporting protection net, and a power source is arranged on the generator. One end, close to the axial flow fan, of the generator is connected with fan blades, the fan blades directly face an air outlet of the axial flow fan, one end, far away from the fan blades, of the generator is connected with the input end of an energy storage converter, the output end of the energy storage converter is connected with an electric heater, and the electric heater is connected to a gas-liquid separator in a sleeving mode. According to the device, output airflow of the air source heat pump is effectively utilized to generate electricity, then electric energy is converted into heat energy to heat the gas-liquid separator, liquid refrigerants in the gas-liquid separator are changed into gaseous refrigerants to enter the compressor, the performance of the compressor is improved, the service life of the compressor is prolonged, and the environmental adaptability of the air source heat pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air source heat pumps, in particular to a device for utilizing waste energy output by an air source heat pump. Background Art

[0002] Air source heat pump is an energy-saving device that uses high-level energy to make heat flow from low-level heat source air to high-level heat source. It is a form of heat pump that can convert low-level heat energy that cannot be directly used into high-level heat energy that can be used, thereby saving some high-level energy. It has a wide range of applications and can be used in conjunction with other heating methods such as floor heating systems. Air source heat pump uses a hot water circulation system that converts the heat energy in the air into the heat energy of water by passing air through the evaporator, compressor, condenser and other components, providing heating and hot water services.

[0003] The existing air source heat pump is provided with a fan on the top. When the air source heat pump is started, a large amount of airflow will be directly discharged from the top through the fan, and effective utilization is not achieved.

[0004] In view of this, we propose an air source heat pump output waste energy utilization device. Utility Model Content

[0005] The purpose of the utility model is to provide an air source heat pump output waste energy utilization device to solve the problems raised by the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides an air source heat pump output waste energy utilization device, the air source heat pump comprises a shell, an axial flow fan is arranged on the top of the shell, a support guard net is arranged on the outer side of the axial flow fan, a DC generator is arranged on the inner top of the support guard net, a fan blade is arranged on one end of the DC generator close to the axial flow fan, the fan blade is located directly above the air outlet of the axial flow fan, the current output end of the DC generator away from the fan blade is electrically connected to the input end of the positive pole of an energy storage converter, the output end of the positive pole of the energy storage converter is electrically connected to a pulse potentiometer, the end of the pulse potentiometer away from the energy storage converter is electrically connected to a PTC electric heater, the end of the PTC electric heater away from the pulse potentiometer is electrically connected to the input end of the negative pole of the energy storage converter, the output end of the negative pole of the energy storage converter is electrically connected to the loop end of the DC generator, a controller is arranged between the energy storage converter and the pulse potentiometer, the controller is electrically connected to the output end of the positive pole of the energy storage converter, and the controller controls the change of the resistance of the pulse potentiometer;

[0008] The PTC electric heater is provided with a gas-liquid separator, the output end of the gas-liquid separator is connected to the input end of the compressor, the output end of the compressor is connected to the input end of the heat exchanger, the output end of the heat exchanger is connected to the input end of the expansion valve, the output end of the expansion valve is connected to the input end of the evaporator, and the output end of the evaporator is connected to the input end of the gas-liquid separator.

[0009] Furthermore, an intelligent temperature controller is provided between the energy storage converter and the pulse potentiometer, and the intelligent temperature controller is connected in series with the PTC electric heater.

[0010] Furthermore, a temperature sensor is provided at the PTC electric heater, and the temperature sensor is electrically connected to the controller.

[0011] Furthermore, the fan blade includes a mounting body, a plurality of blades are provided on the outer periphery of the mounting body, and the plurality of blades extend obliquely outward from the outer periphery of the mounting body.

[0012] Furthermore, the connection curve between the blade and the mounting body extends spirally along the axial direction of the mounting body, and the end of the blade connected to the mounting body to the end away from the mounting body is bent toward another adjacent blade in the direction of rotation of the fan blade.

[0013] Furthermore, the cross-section of the blade is in the shape of an airfoil or a semi-airfoil.

[0014] Compared with the prior art, the utility model has the following technical effects:

[0015] In the utility model, a large amount of airflow is discharged from the axial flow fan in the air source heat pump. By arranging a DC generator and fan blades above the axial flow fan, the discharged airflow will drive the fan blades to rotate, and the fan blades drive the DC generator to generate electricity. The generated electricity is converted into AC power through the energy storage inverter. The converted AC power is used for the PTC electric heater. The PTC electric heater heats the liquid refrigerant in the gas-liquid separator, so that the liquid refrigerant is converted into gas and enters the compressor. This can increase the air intake volume, return air temperature and return oil volume at the return air end of the compressor, reduce the risk of liquid hammer caused by liquid inhalation by the compressor, and increase the internal oil storage capacity of the compressor and the lubrication and heat dissipation of its internal crankshaft, thereby improving the service life of the compressor, thereby improving the environmental adaptability of the air source heat pump.

[0016] Furthermore, the internal resistance of the PTC electric heater is relatively small when it is in a cold state, and the starting current is very large in a cold state, resulting in a large starting power. By setting a pulse potentiometer between the energy storage inverter and the PTC electric heater, the controller controls the pulse potentiometer. When the PTC electric heater is started in a cold state, the controller controls the resistance of the pulse potentiometer to become larger to reduce the starting power of the PTC electric heater. After the PTC electric heater has been running for a period of time, as the temperature rises, the real-time power of the PTC electric heater will slowly decrease. The controller controls the resistance of the pulse potentiometer to decrease, which can better control the working power of the PTC electric heater, thereby improving the reliability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a circuit diagram of the air source heat pump output waste energy utilization device of this embodiment;

[0018] Figure 2 This is an explosion diagram of the air source heat pump output waste energy utilization device of this embodiment;

[0019] Figure 3 Schematic diagram of the structure of the fan blade of this embodiment;

[0020] Figure 4 is a schematic structural diagram of the air source heat pump of this embodiment;

[0021] Figure 5 Schematic diagram of the operation of the air source heat pump of this embodiment.

[0022] Explanation of the reference numerals: 1. housing, 2. axial flow fan, 3. support guard net, 4. DC generator, 5. fan blade, 51. mounting body, 52. blade, 6. anti-loosening flat washer, 7. fixing nut, 8. transmission line, 9. energy storage inverter, 10. controller, 11. pulse potentiometer, 12. PTC electric heater, 13. intelligent thermostat, 14. temperature sensor, 15. gas-liquid separator, 16. compressor, 17. heat exchanger, 18. evaporator, 19. expansion valve. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, mechanisms and / or combinations thereof.

[0026] As an example, see Figures 1 to 5 , this embodiment provides an air source heat pump output waste energy utilization device, the air source heat pump includes a shell 1, the shell 1 can be formed by welding steel plates, or by fastening steel plates with fastening bolts to provide protection for the equipment components of this embodiment. An axial flow fan 2 is installed on the top of the shell 1, and the axial flow fan 2 is located above the evaporator 12. The airflow in the air source heat pump is discharged through the axial flow fan 2. A support guard net 3 is installed on the outside of the axial flow fan 2, and the support guard net 3 protects the axial flow fan 2. The shape of the support guard net 3 can be circular, square or other shapes. The DC generator 4 is detachably installed at the inner top position of the support guard net 3 by fastening bolts, and the support guard net 3 supports and protects the DC generator 4 installed therein. A fan blade 5 is installed at one end of the DC generator 4 close to the axial flow fan 2, and the fan blade 5 is installed on the DC generator 4 by fixing nuts 7 and anti-loosening flat washers 6. The anti-loosening flat washers 6 are provided to prevent the fan blades 5 from loosening during rotation. The fan blades 5 are located directly above the air outlet of the axial flow fan 2 so as to face the gas discharged by the axial flow fan 2 to the greatest extent.

[0027] The current transmission end of the DC generator 4 away from the fan blades 5 is electrically connected to the input end of the positive electrode of the energy storage inverter 9 through the transmission line 8, the output end of the positive electrode of the energy storage inverter 9 is electrically connected to the pulse potentiometer 11 through the transmission line 8, the end of the pulse potentiometer 11 away from the energy storage inverter 9 is electrically connected to the PTC electric heater 12 through the transmission line 8, the end of the PTC electric heater 12 away from the pulse potentiometer 11 is electrically connected to the input end of the negative electrode of the energy storage inverter 9 through the transmission line 8, the output end of the negative electrode of the energy storage inverter 9 is electrically connected to the loop end of the DC generator 4 through the transmission line 8, a controller 10 is provided between the energy storage inverter 9 and the pulse potentiometer 11, the controller 10 is electrically connected to the output end of the positive electrode of the energy storage inverter 9 through the transmission line 8, and the controller 10 controls the resistance of the pulse potentiometer 11 to change.

[0028] The PTC electric heater 12 is mounted on the gas-liquid separator 15, the output end of the gas-liquid separator 15 is connected to the input end of the compressor 16, the output end of the compressor 16 is connected to the input end of the heat exchanger 17, the output end of the heat exchanger 17 is connected to the input end of the expansion valve 19, the output end of the expansion valve 19 is connected to the input end of the evaporator 18, and the output end of the evaporator 18 is connected to the input end of the gas-liquid separator 15.

[0029] During the operation of the air heat source pump, a large amount of airflow is discharged from the axial flow fan 2. By arranging a DC generator 4 and fan blades 5 above the axial flow fan 2, the discharged airflow drives the fan blades 5 to rotate, and the fan blades 5 drive the DC generator 4 to generate electricity. The DC generator 4 transmits the generated DC power to the energy storage inverter 9 through the transmission line 8. The energy storage inverter 9 converts the DC power into AC power, and the converted AC power is transmitted to the PTC electric heater 12 through the transmission line 8. The PTC electric heater 12 heats the liquid refrigerant in the gas-liquid separator 15, so that the liquid refrigerant is converted into gas and enters the compressor 16. The compressor 16 compresses the refrigerant into high-temperature and high-pressure gas. The high-temperature and high-pressure gas enters the heat exchanger 17 for heat exchange, and then enters the expansion valve 19. The expansion valve 19 throttles the medium-temperature and high-pressure liquid refrigerant into a low-temperature and low-pressure liquid refrigerant. The refrigerant returns to the evaporator 18 to continue the circulation work. The liquid refrigerant in the gas-liquid separator 15 is converted into gas by the PTC electric heater 12 and then enters the compressor 16. This can increase the air intake, return air temperature and return oil volume at the return air end of the compressor 16, reduce the risk of liquid hammer caused by liquid in the compressor 16, and increase the internal oil storage capacity of the compressor 16 and the lubrication and heat dissipation of its internal crankshaft, thereby increasing the service life of the compressor 16 and thus improving the environmental adaptability of the air source heat pump.

[0030] Furthermore, the internal resistance of the PTC electric heater 12 is relatively small when it is in a cold state, and the starting current is very large in a cold state, which results in a large starting power of the PTC electric heater 12. Excessive power may cause a circuit breaker. By setting a pulse potentiometer 11 between the energy storage inverter 9 and the PTC electric heater 12, the controller 10 sends a pulse control signal to the pulse potentiometer 11, and the pulse potentiometer 11 receives the pulse control signal sent by the controller 10, and adjusts the resistance according to the pulse control signal. When the PTC electric heater 12 is started in a cold state, the controller 10 controls the resistance of the pulse potentiometer 11 to increase so as to reduce the starting power of the PTC electric heater 12. After the PTC electric heater 12 has been running for a period of time, as the temperature rises, the real-time power of the PTC electric heater 12 will slowly decrease. The controller 10 controls the resistance of the pulse potentiometer 11 to decrease, which can better control the working power of the PTC electric heater 12, thereby improving the reliability of operation.

[0031] During the operation of the air heat source pump, a large amount of airflow is discharged from the axial flow fan 2. By setting a DC generator 4 and a fan blade 5 above the axial flow fan 2, the discharged airflow drives the fan blade 5 to rotate, and the fan blade 5 drives the DC generator 4 to generate electricity. The DC generator 4 transmits the generated DC power to the energy storage converter 9 through the transmission line 8. The energy storage converter 9 converts the DC power into AC power. The converted AC power is transmitted to the PTC electric heater 12 through the transmission line 8. The PTC electric heater 12 heats the liquid refrigerant in the gas-liquid separator 15 to convert the liquid refrigerant into a gaseous state. In addition, the internal resistance of the PTC electric heater 12 is relatively small when it is cold, and the starting current is very large in the cold state, which leads to a large starting power of the PTC electric heater 12. Excessive power may cause a circuit breaker. By setting a pulse potentiometer 11 between the energy storage converter 9 and the PTC electric heater 12, the controller 10 sends a pulse control signal to the pulse potentiometer 11, and the pulse potentiometer 11 receives the pulse control signal sent by the controller 10 and adjusts the resistance according to the pulse control signal. When the PTC electric heater 12 is started in a cold state, the controller 10 controls the resistance of the pulse potentiometer 11 to increase so as to reduce the starting power of the PTC electric heater 12. After the PTC electric heater 12 has been running for a period of time, as the temperature rises, the real-time power of the PTC electric heater 12 will slowly decrease. The controller 10 controls the resistance of the pulse potentiometer 11 to decrease, which can better control the working power of the PTC electric heater 12, thereby improving the reliability of operation.

[0032] The PTC electric heater 10 is used for heating because it has the advantages of small thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and power-saving heater. Its outstanding feature lies in its safety performance. Under any application conditions, it will not produce the "reddening" phenomenon on the surface of electric heating tube heaters, and it is not easy to cause safety accidents such as burns and fires.

[0033] An intelligent temperature controller 13 is provided between the energy storage converter 9 and the pulse potentiometer 11. The intelligent temperature controller 13 is connected in series with the PTC electric heater 12. When the heating temperature of the PTC electric heater 12 is higher than the preset temperature value set by the intelligent temperature controller 13, the intelligent temperature controller 13 disconnects the power supply to the PTC electric heater 12. The preset temperature value can be set according to actual conditions. The intelligent temperature controller 13 can ensure that the temperature of the PTC electric heater 12 will not be higher than the preset temperature value, which is conducive to improving the safety and reliability of the circuit.

[0034] A temperature sensor 14 is provided at the PTC electric heater 12, and the temperature sensor 14 is electrically connected to the controller 10. The temperature sensor 14 is used to collect temperature information of the PTC electric heater 12, and send the collected temperature information to the controller 10 in real time or at preset intervals, so that the staff can understand the heating temperature in time.

[0035] The fan blade 5 includes a mounting body 51, and six blades 52 are mounted on the outer periphery of the mounting body 51. The six blades 52 are distributed at intervals around the central axis of the mounting body 51, and the six blades extend outwardly from the outer periphery of the mounting body 51 to increase the contact area between the blades 52 and the exhaust gas of the axial flow fan 2. In addition, the connection curve between the blade 52 and the mounting body 51 extends spirally along the axial direction of the mounting body 51. The end of the blade 52 connected to the mounting body 51 to the end away from the mounting body 51 is bent toward another adjacent blade 52 in the rotation direction of the fan blade 5. The blade 52 with this geometric shape can better adapt to the change of airflow, effectively reduce the turbulence of air flow, reduce the friction resistance of the blade 52, and improve the capture rate and conversion efficiency of airflow. At the same time, it can also reduce the load pressure and wear degree of the DC generator 4, and improve the operation safety performance of the DC generator 4.

[0036] The cross section of the blade 52 is in the shape of an airfoil or a semi-airfoil. The blade 52 with such a cross section increases the velocity and directionality of the airflow, generates a larger wind force, has a smaller noise, and operates stably. The blade 52 is made of ABS material, which is not easy to deform, thus avoiding the noise caused by deformation of the blade 52 due to wind pressure, and further reducing the possibility of noise generation.

[0037] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0038] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. An air source heat pump output waste energy utilization device, the air source heat pump comprising a housing (1), an axial flow fan (2) being arranged on the top of the housing (1), characterized in that: A support guard net (3) is provided on the outside of the axial flow fan (2), a DC generator (4) is provided on the top of the inside of the support guard net (3), a fan blade (5) is provided on one end of the DC generator (4) close to the axial flow fan (2), the fan blade (5) is located directly above the air outlet of the axial flow fan (2), the current output end of the DC generator (4) away from the fan blade (5) is electrically connected to the input end of the positive pole of the energy storage converter (9), the output end of the positive pole of the energy storage converter (9) is electrically connected to the pulse potentiometer (11), and the pulse potentiometer (11) is away from the energy storage converter (9). One end of the converter (9) is electrically connected to a PTC electric heater (12); one end of the PTC electric heater (12) away from the pulse potentiometer (11) is electrically connected to the input end of the negative electrode of the energy storage converter (9); the output end of the negative electrode of the energy storage converter (9) is electrically connected to the loop end of the DC generator (4); a controller (10) is provided between the energy storage converter (9) and the pulse potentiometer (11); the controller (10) is electrically connected to the output end of the positive electrode of the energy storage converter (9); and the controller (10) controls the resistance of the pulse potentiometer (11) to change; The PTC electric heater (12) is provided with a gas-liquid separator (15), the output end of the gas-liquid separator (15) is connected to the input end of a compressor (16), the output end of the compressor (16) is connected to the input end of a heat exchanger (17), the output end of the heat exchanger (17) is connected to the input end of an expansion valve (19), the output end of the expansion valve (19) is connected to the input end of an evaporator (18), and the output end of the evaporator (18) is connected to the input end of the gas-liquid separator (15).

2. The air source heat pump output waste energy utilization device according to claim 1, characterized in that: An intelligent temperature controller (13) is provided between the energy storage converter (9) and the pulse potentiometer (11), and the intelligent temperature controller (13) is connected in series with the PTC electric heater (12).

3. The air source heat pump output waste energy utilization device according to claim 1, characterized in that: The PTC electric heater (12) is provided with a temperature sensor (14), and the temperature sensor (14) is electrically connected to the controller (10).

4. The air source heat pump output waste energy utilization device according to claim 1, characterized in that: The fan blade (5) comprises a mounting body (51), the outer periphery of which is provided with a plurality of blades (52), and the plurality of blades (52) extend outwardly from the outer periphery of the mounting body (51) at an angle.

5. The air source heat pump output waste energy utilization device according to claim 4, characterized in that: The connecting curve between the blade (52) and the mounting body (51) extends spirally along the axial direction of the mounting body (51), and the blade (52) is bent from one end connected to the mounting body (51) to the end away from the mounting body (51) in the rotation direction of the fan blade (5) toward another adjacent blade (52).

6. The air source heat pump output waste energy utilization device according to claim 4, characterized in that: The cross-section of the blade (52) is in the shape of an airfoil or a semi-airfoil.

Images