Gas-electric complementary heating system

By introducing a gas-electric complementary heating system into the air source heat pump system, using gas mechanisms to perform auxiliary heat and using exhaust gas to heat the refrigerant, the problems of reduced heating capacity and high defrost energy consumption in low-temperature environments are solved, and more efficient heating and energy utilization are achieved.

CN222911758UActive Publication Date: 2025-05-27SHENZHEN SHENRAN CLEAN ENERGY CO LTD
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Patent Information

Application Number
CN202421637278.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-11
Publication Date
2025-05-27
Estimated Expiration
2034-07-11

AI Technical Summary

Technical Problem

The existing air source heat pumps have lower heating capacity, lower heating temperature and high defrost energy consumption in low temperature environments.

Method used

A gas-electric complementary heating system is provided, which provides auxiliary heat through a gas mechanism to increase the heating capacity and heating temperature of the heating system, and uses the high-temperature exhaust gas generated by the auxiliary heat of the gas mechanism to heat up the refrigerant of the heat pump mechanism, reduces the compression ratio and compression power of the compressor, and at the same time uses the residual heat to defrost the outside of the evaporator.

Benefits of technology

In low-temperature and ultra-low-temperature environments, improve the heating efficiency of the heating system, reduce the compression power of the compressor, avoid energy waste caused by defrost of the heat pump system, and ensure the safe and continuous supply of the heating system.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a gas-electricity complementary heating system which comprises a heat pump mechanism, a gas mechanism, a water inlet pipe and a water outlet pipe. The heat pump mechanism comprises a compressor, a condenser, a throttling valve, an evaporator and a heat exchanger which are sequentially connected through a refrigerant pipeline. The fuel gas mechanism comprises a fuel gas mechanism body and a waste gas pipe connected to the fuel gas mechanism body. The condenser and the fuel gas mechanism body are both connected with the water inlet pipe and the water outlet pipe, and cold water entering from the water inlet pipe absorbs heat in the condenser and / or the fuel gas mechanism and is discharged through the water outlet pipe; the waste gas pipe is sequentially connected with the heat exchanger and the evaporator, and waste gas in the waste gas pipe is used for heating a refrigerant flowing through the heat exchanger and conducting auxiliary defrosting on the evaporator. The refrigerant is heated through auxiliary heating of the fuel gas mechanism and high-temperature waste gas generated by the fuel gas mechanism, the evaporator is defrosted through residual heat, the heat supply amount and the heat supply temperature of the heating system are increased, and the heating efficiency is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of heat pump equipment, in particular to a gas-electric complementary heating system. Background Art

[0002] An air source heat pump is an energy regeneration device that uses air thermal energy for heating. With very little electric energy, it absorbs a large amount of low-temperature heat energy in the air, compresses it into high-temperature heat energy through a compressor, and transmits it to a water tank to heat the water stored in the water tank. Therefore, it has low energy consumption, high efficiency, fast speed, good safety, and strong environmental protection, and is widely used.

[0003] However, in a low-temperature environment, the load of the compressor of the existing air source heat pump increases, the energy consumption becomes larger, resulting in problems such as a decrease in heating capacity, a decrease in heating temperature, and higher defrosting energy consumption. In cold regions prone to frosting such as the north, additional electric auxiliary heating equipment needs to be added, which limits its use in cold regions.

[0004] Therefore, the existing technology still needs to be improved. Content of the Utility Model

[0005] In view of the above deficiencies of the existing technology, the purpose of the utility model is to provide a gas-electric complementary heating system to solve the problems of decreased heating capacity, decreased heating temperature, and higher defrosting energy consumption of the existing air source heat pump in a low-temperature environment.

[0006] The technical solution of the utility model is as follows:

[0007] Provide a gas-electric complementary heating system, including:

[0008] A heat pump mechanism, a gas mechanism, an inlet water pipe, and an outlet water pipe;

[0009] The heat pump mechanism includes a compressor, a condenser, a throttle valve, an evaporator, and a heat exchanger connected in sequence through a refrigerant pipeline;

[0010] The gas mechanism includes a gas mechanism body and an exhaust pipe connected to the gas mechanism body;

[0011] Both the condenser and the gas mechanism body are connected to the inlet water pipe and the outlet water pipe. The cold water entering the inlet water pipe absorbs heat in the condenser and / or the gas mechanism and is discharged through the outlet water pipe;

[0012] The exhaust pipe is connected to the heat exchanger and the evaporator in sequence. The exhaust gas in the exhaust pipe is used to heat the refrigerant flowing through the heat exchanger and to assist in defrosting the evaporator.

[0013] In the above solution, the gas mechanism generates heat through gas combustion to further heat the cold water, increasing the heat supply and heating temperature of the heating system. The waste gas generated by combustion heats the refrigerant at low temperature and low pressure, reducing the compression ratio and heating efficiency of the compressor. The remaining temperature of the waste gas after heat exchange can further exchange heat with the evaporator, playing a role in defrosting the evaporator.

[0014] Furthermore, a defrosting device is provided outside the evaporator, and the exhaust pipe is connected to the defrosting device.

[0015] In the above solution, the defrosting device raises the temperature of the surface of the copper pipe by absorbing the heat of the waste gas discharged from the exhaust pipe, thereby melting the frost, playing a role in ensuring the normal operation of the evaporator by utilizing the waste heat of the waste gas.

[0016] Furthermore, the gas-electric complementary heating system further includes a connecting pipe, which is connected between the condenser and the gas mechanism body. The cold water entering the condenser through the water inlet pipe enters the gas mechanism body through the connecting pipe.

[0017] In the above solution, the connecting pipe allows the cold water heated by the condenser to enter the gas mechanism body for further heating, and then the hot water is discharged through the outlet pipe from the outlet of the gas mechanism body.

[0018] Furthermore, the gas-electric complementary heating system further includes an intelligent Internet mechanism, which is respectively connected to the heat pump mechanism and the gas mechanism.

[0019] Furthermore, the intelligent Internet mechanism includes a micro-control unit. A solenoid valve is provided at the connection between the connecting pipe and the outlet of the condenser, and the micro-control unit is electrically connected to the solenoid valve.

[0020] In the above solution, the micro-control unit controls the solenoid valve to open the passage between the outlet of the condenser and the connecting pipe, so that the gas mechanism body works.

[0021] Furthermore, the heat pump mechanism further includes a relay, which is electrically connected to the micro-control unit, and the relay is used to control the on-off of the compressor and the external power supply.

[0022] In the above solution, the micro-control unit controls the start of the compressor by controlling the relay, so as to achieve the purpose of controlling the operation of the heat pump mechanism.

[0023] Furthermore, the gas-electric complementary heating system further includes a temperature sensor electrically connected to the intelligent Internet mechanism, and the temperature sensor is used to monitor the outlet water temperature of the condenser.

[0024] In the above solution, a temperature sensor is arranged at the water outlet of the condenser to monitor the water outlet temperature of the condenser. When the water outlet temperature is lower than the set threshold, the micro control unit controls the solenoid valve to open the passage between the water outlet of the condenser and the connecting pipe, thereby starting the gas mechanism to work.

[0025] Furthermore, the heat pump mechanism further includes: a four-way reversing valve, and the four interfaces of the four-way reversing valve are respectively connected to the suction port and the discharge port of the compressor, as well as the condenser and the heat exchanger.

[0026] In the above solution, when frosting occurs on the outer side of the evaporator and the defrosting device fails to work properly for defrosting, the reversing valve is activated for reversing. At this time, the evaporator acts as a condenser, and defrosting is performed by the heat generated by the liquefaction of the refrigerant.

[0027] Furthermore, the intelligent Internet mechanism further includes a network connection unit, and remote management is realized through the network connection unit.

[0028] Furthermore, the gas-electricity complementary heating system further includes a skid base mechanism, and the skid base mechanism is used to integrally fix the gas mechanism and the heat pump mechanism.

[0029] In the above solution, the skid base mechanism facilitates the transportation and installation of the heating system, enabling it to be deployed and used more effectively.

[0030] This solution proposes a gas-electricity complementary heating system. Through the above solution, in low-temperature and ultra-low-temperature environments, auxiliary heating is carried out by the gas mechanism to improve the heat supply and heating temperature of the heating system, and the refrigerant of the heat pump mechanism is heated by the high-temperature waste gas generated by the auxiliary heating of the gas mechanism, thereby reducing the compression ratio and compression power of the compressor, and using the remaining heat to defrost the outer side of the evaporator, avoiding the energy waste problem caused by using the heat pump system for defrosting, thereby improving the heating efficiency of the heating system; at the same time, the heat pump mechanism and the gas mechanism can also achieve separate heating, and can realize continuous heat supply under special conditions, ensuring heating safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of the gas mechanism of an embodiment of a gas-electricity complementary heating system of the present invention;

[0032] Figure 2 It is a schematic structural diagram of the heat pump mechanism of an embodiment of a gas-electricity complementary heating system of the present invention;

[0033] Figure 3 It is a schematic structural diagram of an embodiment of a gas-electricity complementary heating system of the present invention;

[0034] Figure 4Schematic diagram of the principle of an embodiment of a gas-electric complementary heating system of the present utility model;

[0035] Explanation of the reference numerals in the attached drawings: 1. Gas mechanism; 11. Gas mechanism body; 12. Water inlet pipe; 13. Water outlet pipe; 14. Connecting pipe; 15. Solenoid valve; 16. Exhaust pipe; 2. Heat pump mechanism; 21. Compressor; 22. Condenser; 23. Evaporator; 24. Heat exchanger; 25. Four-way reversing valve; 26. Throttle valve; 27. Defrosting device. Specific implementation manner

[0036] The present utility model provides a gas-electric complementary heating system. To make the purpose, technical solution and effects of the present utility model clearer and more definite, the following further details the present utility model by way of examples with reference to the attached drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0037] In the existing air source heat pump, in a low-temperature environment, the load of the compressor increases, the energy consumption becomes larger, resulting in problems such as a decrease in heating capacity, a decrease in heating temperature, and a relatively high defrosting energy consumption.

[0038] To solve the above technical problems, the present utility model provides a gas-electric complementary heating system, specifically as the following embodiments.

[0039] As Figures 1 to 3 shown, a gas-electric complementary heating system mentioned in the present utility model specifically includes: a heat pump mechanism 2, a gas mechanism 1, a water inlet pipe 12 and a water outlet pipe 13;

[0040] The heat pump mechanism 2 includes a compressor 21, a condenser 22, a throttle valve, an evaporator 23 and a heat exchanger 24 connected in sequence through a refrigerant pipeline;

[0041] The gas mechanism includes a gas mechanism body 11 and an exhaust pipe 16 connected to the gas mechanism body 11;

[0042] Both the condenser 22 and the gas mechanism body 11 are connected to the water inlet pipe 12 and the water outlet pipe 13. The cold water entering through the water inlet pipe 12 absorbs heat in the condenser 22 and / or the gas mechanism 1 and is discharged through the water outlet pipe 13;

[0043] The exhaust pipe 16 is connected to the heat exchanger 24 and the evaporator 23 in sequence. The exhaust gas in the exhaust pipe 16 is used to heat the refrigerant flowing through the heat exchanger 24 and to assist in defrosting the evaporator 23.

[0044] Specifically, as Figure 4As shown, the compressor 21 is powered by an external power supply, which includes but is not limited to mains power. The compressor 21 of the heat pump mechanism 2 sucks in the low-temperature and low-pressure refrigerant vapor from the evaporator 23, compresses it into high-temperature and high-pressure superheated vapor through the compressor 21, then presses it into the condenser 22 for constant-pressure cooling, releases heat to the water flow pipeline, and then cools into liquid refrigerant. The liquid refrigerant passes through the throttle valve 26 for throttling and pressure reduction, becomes low-temperature and low-pressure refrigerant and enters the evaporator 23 again, absorbs heat from the outdoor air in the evaporator 23, evaporates into low-temperature and low-pressure refrigerant vapor, and enters the compressor 21 again for circulation. The evaporator 23 absorbs heat from the outside world during the gasification process, resulting in frosting due to the too low outside temperature. The condenser 22 releases heat to the outside world during the liquefaction process of the refrigerant, thereby heating the water in the water flow pipeline. The gas combustion mechanism body 11 uses natural gas, liquefied gas, coal gas, etc. as fuel, and the gas combustion mechanism body 11 further heats the cold water flowing through the gas combustion mechanism body 11 through fuel combustion, improving the heat supply and heating temperature of the heating system. The exhaust gas generated by combustion is discharged through the exhaust pipe 16. The high-temperature exhaust gas discharged from the exhaust pipe 16 exchanges heat with the refrigerant at the heat exchanger, serving to heat the low-temperature and low-pressure refrigerant, reduce the compression ratio of the compressor 21, improve the heating efficiency, and reduce the exhaust gas temperature. The remaining temperature of the exhaust gas after heat exchange can further exchange heat with the evaporator 23, serving to defrost the evaporator 23.

[0045] Optionally, the refrigerant includes but is not limited to ammonia, sulfur dioxide, and non-halogenated hydrocarbons.

[0046] A defrosting device 27 is provided outside the evaporator 23, and the exhaust pipe 16 is connected to the defrosting device 27. The defrosting device 27 includes: copper tubes arranged uniformly outside the evaporator 23, the copper tubes are provided with an air inlet and an air outlet, the air inlet of the copper tube is connected to the air outlet of the heat exchanger 24, and the exhaust gas is discharged from the air outlet of the copper tube. The copper tubes raise the temperature of the surface of the copper tubes by absorbing the heat of the exhaust gas discharged from the exhaust pipe 16, thereby melting the frost, serving to ensure the normal operation of the evaporator 23 by using the waste heat of the exhaust gas.

[0047] In the above solution, under low-temperature conditions, the heating system relies on electricity to drive the operation of the heat pump mechanism 2. The compressor 21 sucks in the low-temperature and low-pressure refrigerant vapor from the evaporator 23, compresses it into high-temperature and high-pressure superheated vapor, then presses it into the condenser 22 for constant-pressure cooling, and uses the heat released by the cooling of the condenser 22 to heat the cold water. The evaporator 23 absorbs heat from the air during the evaporation process of the refrigerant. At the same time, the evaporation of the refrigerant causes the temperature outside the evaporator 23 to decrease, resulting in frosting. At this time, the gas combustion mechanism 1 and the defrosting device 27 are started, and the waste heat of the exhaust gas generated by the gas combustion mechanism body 11 is transferred to the defrosting device 27, enabling the defrosting device 27 to play a defrosting role. When the defrosting is completed, the gas combustion mechanism 1 and the defrosting device 27 stop operating.

[0048] Under ultra-low temperature conditions, the heat absorbed by the heat pump mechanism 2 from the outdoor air is limited. At this time, both the heat supply and the heating temperature generated by the heat pump mechanism 2 driven only by electricity in the heating system show an obvious downward trend. At this time, the heating system automatically starts the gas mechanism 1, and the gas mechanism 1 and the heat pump mechanism 2 work simultaneously. At this time, the gas mechanism body 11 generates heat by burning gas to heat the cold water, and the generated hot water enters the user terminal in parallel with the hot water generated by the heat pump mechanism 2, so as to increase the heat supply and heating temperature of the heating system. In addition, when the gas mechanism 1 works, high-temperature waste gas is generated. The waste heat of the waste gas exchanges heat with the refrigerant at the heat exchanger 24 to increase the temperature of the refrigerant, thereby reducing the compression ratio and compression power of the compressor 21. The waste heat of the waste gas generated by the gas mechanism 1 after heat exchange at the heat exchanger 24 is further provided to the defrosting device 27 for defrosting, avoiding the energy waste and heating temperature fluctuation problems caused by the reverse process of the conventional air source heat pump system, and realizing the cascade matching utilization of the waste gas energy at the same time.

[0049] In a specific embodiment, when the outside is under ultra-low temperature conditions and the refrigerant temperature in the evaporator 23 is lower than the outside temperature, at this time, the gas mechanism 1 and the heat pump mechanism 2 work simultaneously. The gas mechanism body 11 generates waste gas at 150 °C, and the waste gas at 150 °C exchanges heat with the refrigerant at the heat exchanger 24 to increase the refrigerant temperature, avoiding a significant attenuation of the heating capacity of the compressor 21 due to the too low refrigerant temperature. The temperature of the cold water entering from the water inlet pipe is initially increased at the condenser 22. At the same time, the waste gas at 150 °C still has waste heat after heat exchange at the heat exchanger 24. At this time, the flue gas waste heat is about 50 °C, which can continue to be provided to the defrosting device 27 for defrosting, realizing the cascade matching utilization of the waste gas, and also avoiding the energy consumption waste generated by the reverse defrosting of the heat pump mechanism 2, and improving the heating efficiency of the heating system.

[0050] The gas-electricity complementary heating system further includes a connecting pipe, and the connecting pipe is connected between the condenser 22 and the gas mechanism body 11. The cold water entering the condenser 22 from the water inlet pipe 12 enters the gas mechanism body 11 through the connecting pipe 14. When the gas mechanism 1 and the heat pump mechanism 2 work simultaneously, the water inlet of the condenser 22 is connected to the water inlet pipe 12 to allow cold water to enter, and the water outlet of the condenser 22 is connected to the water inlet and outlet pipes of the gas mechanism body 11, so that part of the water heated by the condenser 22 enters the gas mechanism body 11 for further heating. The water after further heating enters the outlet pipe 13 from the water outlet of the gas mechanism body 11 and is discharged from the outlet pipe 13 together with the remaining part of the water that has not flowed through the gas mechanism body 11.

[0051] Under extreme temperature conditions, since the outside air temperature is too low, the heat pump mechanism 2 cannot operate. At this time, the gas mechanism 1 is started alone. The cold water entering the condenser 22 from the water inlet pipe 12 directly enters the gas mechanism body 11 and the water outlet pipe 13. The water heated by the gas mechanism body enters the water outlet pipe 13 and merges with the cold water, and then is discharged from the water outlet pipe 13.

[0052] It should be noted that part of the water flowing out of the condenser 22 directly flows into the water outlet pipe, and part enters the gas mechanism 1. The specific flow rate entering the gas mechanism 1 is adjusted according to the water inlet flow rate of the water inlet pipe 12 and the water inlet flow rate of the gas mechanism 1.

[0053] A solenoid valve 15 is provided at the water outlet of the condenser 22 of the connecting pipe 14. The solenoid valve 15 is a switch control valve. When the gas mechanism 1 is not operating, the solenoid valve 15 closes the water flow path of the connecting pipe 14, and the cold water enters the condenser 22 from the water inlet pipe 12 and is heated, and the hot water is discharged from the water outlet of the condenser 22 through the water outlet pipe 13; when the gas mechanism 1 is operating, the heat pump mechanism 2 is not operating, or when the gas mechanism 1 and the heat pump mechanism 2 are operating simultaneously, the solenoid valve 15 opens the water flow path of the connecting pipe 14, the cold water enters the condenser 22 from the water inlet pipe 12, and then is divided at the water outlet of the condenser 22. Part of it enters the gas mechanism body 11 to be heated and then flows into the water outlet pipe 13, and is discharged from the water outlet pipe 13 together with the remaining part of the water that has not flowed through the gas mechanism body 11.

[0054] The gas-electricity complementary heating system further includes an intelligent Internet mechanism, and the intelligent Internet mechanism is respectively connected to the heat pump mechanism and the gas mechanism.

[0055] The intelligent Internet mechanism includes a micro control unit (MCU). A solenoid valve 15 is provided at the connection of the connecting pipe and the outlet of the condenser 22, and the micro control unit is electrically connected to the solenoid valve 15. The MCU controls the solenoid valve 15 to open the water flow path of the connecting pipe 14 so that the gas mechanism body 11 operates.

[0056] The compressor 21 is connected to an external power supply, and the on-off of the compressor 21 is controlled by a relay. The relay is electrically connected to the micro control unit. The MCU controls the relay to start the compressor 21 to achieve the purpose of controlling the operation of the heat pump mechanism 2.

[0057] The gas-electricity complementary heating system further includes a temperature sensor electrically connected to the intelligent Internet mechanism. The temperature sensor is used to monitor the outlet water temperature of the condenser 22. The temperature sensor is provided at the outlet of the condenser 22 to monitor the outlet water temperature of the condenser 22. When the outlet water temperature is lower than the set threshold, the MCU controls the solenoid valve 15 to open the water flow path of the connecting pipe 14, thereby starting the gas mechanism 1 to operate.

[0058] The intelligent Internet-based mechanism also includes a network connection unit, through which remote management of the heating system is realized.

[0059] Through the intelligent Internet-based mechanism, the heating system can realize functions such as remote data monitoring, remote device management, fault warning, and OTA (Over-the-Air) remote upgrade.

[0060] The heat pump mechanism 2 further includes: a four-way reversing valve 25. The four interfaces of the four-way reversing valve 25 are respectively connected to the suction port and the discharge port of the compressor 21, as well as the condenser 22 and the heat exchanger 24. The four-way reversing valve 25 can connect different interfaces through the action of the internal valve core, thereby changing the flow direction of the refrigerant circulation circuit. The suction port of the compressor 21 is the low-pressure side of the compressor 21, and the discharge port of the compressor 21 is the high-pressure side of the compressor 21. When the heating system is working normally, the refrigerant passage of the refrigerant pipeline is successively the evaporator 23, the heat exchanger 24, the intake port of the compressor 21, the discharge port of the compressor 21, and the condenser 22. At this time, the high-temperature and high-pressure gaseous refrigerant discharged from the discharge port of the compressor 21 is liquefied in the condenser 22, thereby generating heat and releasing heat to the water in the water flow pipeline. When frost accumulates on the outer side of the evaporator 23 and the defrosting device 27 cannot work properly for defrosting, in order to prevent the heating system from failing to work properly, the reversing valve is activated for reversing at this time. The refrigerant passage of the refrigerant pipeline is successively the evaporator 23, the heat exchanger 24, the discharge port of the compressor 21, the intake port of the compressor 21, and the condenser 22. At this time, the high-temperature and high-pressure gaseous refrigerant generated by the compressor 21 enters the evaporator 23 for liquefaction. At this time, the evaporator 23 acts as the condenser 22, and defrosting is carried out through the heat generated by the liquefaction of the refrigerant. When the defrosting work is completed, the four-way reversing valve 25 is reversed again to change the direction of the discharge port of the compressor 21, so that the heat pump mechanism 2 restarts the heating work.

[0061] The heating system further includes a skid base mechanism, which is used to integrally fix the gas mechanism 1 and the heat pump mechanism 2, so as to facilitate the transportation and installation of the heating system, enabling it to be more effectively deployed and used.

[0062] In summary, the present technical solution proposes a gas-electric complementary heating system, which is provided with a heat pump mechanism 2 for electric heating and a defrosting device 27 for gas heating. In low-temperature and ultra-low-temperature environments, auxiliary heating is carried out through the gas mechanism 1 to increase the heat supply and heating temperature of the heating system, and the high-temperature waste gas generated by the auxiliary heating of the gas mechanism 1 is used to increase the temperature of the refrigerant of the heat pump mechanism 2, thereby reducing the compression ratio and compression power of the compressor 21, and using the remaining heat to defrost the outside of the evaporator 23, avoiding the energy waste problem caused by using the heat pump system for defrosting, and thus improving the heating efficiency of the heating system; at the same time, the heat pump mechanism and the gas mechanism can also achieve independent heating, and can realize continuous heat supply under special conditions, ensuring heating safety. It should be understood that the application of the present utility model is not limited to the above examples, and those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A gas-electricity complementary heating system, characterized in that: include: Heat pump mechanism, gas mechanism, water inlet pipe and water outlet pipe; The heat pump mechanism comprises a compressor, a condenser, a throttle valve, an evaporator and a heat exchanger which are sequentially connected through a refrigerant pipeline; The gas mechanism comprises a gas mechanism body and an exhaust pipe connected to the gas mechanism body; The condenser and the gas mechanism body are both connected to the water inlet pipe and the water outlet pipe, and the cold water entering the water inlet pipe absorbs heat in the condenser and / or the gas mechanism and is discharged through the water outlet pipe; The exhaust pipe is connected to the heat exchanger and the evaporator in sequence, and the exhaust gas in the exhaust pipe is used to heat the refrigerant flowing through the heat exchanger and to assist in defrosting the evaporator.

2. The gas-electricity complementary heating system according to claim 1, characterized in that: A defrosting device is arranged outside the evaporator, and the exhaust pipe is connected to the defrosting device.

3. The gas-electricity complementary heating system according to claim 1, characterized in that: The gas-electric complementary heating system also includes a connecting pipe, which is connected between the condenser and the gas mechanism body. The cold water entering the condenser through the water inlet pipe enters the gas mechanism body through the connecting pipe.

4. The gas-electricity complementary heating system according to claim 3, characterized in that: The gas-electricity complementary heating system also includes an intelligent Internet mechanism, which is connected to the heat pump mechanism and the gas mechanism respectively.

5. The gas-electricity complementary heating system according to claim 4, characterized in that: The intelligent Internet mechanism includes a micro control unit, and a solenoid valve is provided at the connection between the connecting pipe and the outlet of the condenser, and the micro control unit is electrically connected to the solenoid valve.

6. The gas-electricity complementary heating system according to claim 5, characterized in that: The heat pump mechanism further comprises a relay, which is electrically connected to the micro control unit and is used to control the on / off connection between the compressor and an external power supply.

7. The gas-electricity complementary heating system according to claim 4, characterized in that: The gas-electricity complementary heating system also includes a temperature sensor electrically connected to the intelligent Internet mechanism, and the temperature sensor is used to monitor the outlet water temperature of the condenser.

8. The gas-electricity complementary heating system according to claim 1, characterized in that: The heat pump mechanism further comprises: a four-way reversing valve, wherein four interfaces of the four-way reversing valve are respectively connected to the air intake port and the air exhaust port of the compressor, and the condenser and the heat exchanger.

9. The gas-electricity complementary heating system according to claim 4, characterized in that: The intelligent Internet mechanism also includes a network connection unit, through which remote management is achieved.

10. The gas-electricity complementary heating system according to claim 1, characterized in that: The gas-electricity complementary heating system further comprises a pry seat mechanism, and the pry seat mechanism is used for integrating and fixing the gas mechanism and the heat pump mechanism.