Novel hybrid power air conditioning system

Abstract

The utility model belongs to the technical field of heat pump air conditioners, and particularly relates to a novel hybrid power air conditioning system. Comprising an electrically-driven compressor system, a gas engine-driven compressor system and a refrigerant system shared by the electrically-driven compressor system and the gas engine-driven compressor system. The electrically-driven compressor system and the gas engine-driven compressor system are connected in parallel. According to the utility model, the gas engine driving compressor and the electric driving compressor are simultaneously arranged in the unit and are designed in the same refrigerant system, so that an optimal control scheme is input into a control program; the hybrid power heat pump air conditioning unit can execute the operation mode with the lowest operation cost according to the set electricity price and gas price of the location, and the problems that a heat pump air conditioner driven by a single energy source cannot balance the energy structure and cannot reduce the energy consumption are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat pump air conditioners, and in particular relates to a novel hybrid power air conditioner system. Background Art

[0002] At present, there are large differences in electricity and gas prices in many cities and regions, and the performance characteristics of gas engine-driven compressors and electric-driven compressors are also different. This leads to the fact that heat pump air conditioners driven by a single energy source cannot achieve a balanced energy structure and cannot reduce energy consumption. Utility Model Content

[0003] The purpose of the present invention is to overcome the problem that heat pump air conditioners driven by a single energy source cannot achieve a balanced energy structure and cannot reduce energy consumption, and to provide a heat pump air conditioner unit that is suitable for having both natural gas, liquefied petroleum gas and other fuels and electricity as driving energy. The optimal solution can be selected based on the performance curve of the electric drive compressor, the performance curve of the gas engine drive compressor, and comprehensive operation efficiency, electricity price, gas price and other factors.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A novel hybrid air conditioning system, characterized in that it comprises an electric drive compressor system, a gas engine driven compressor system and a set of refrigerant system shared by the two; the electric drive compressor system and the gas engine driven compressor system are connected in parallel;

[0006] The electric-driven compressor system comprises an electric-driven compressor, a one-way valve, and a filter; the one-way valve is connected to the outlet side of the electric-driven compressor, and the filter is connected to the inlet side of the electric-driven compressor;

[0007] The gas engine driven compressor system comprises a gas driven compressor, a belt, and an engine; the gas driven engine is operated, and the gas driven compressor is driven to operate through the belt;

[0008] The refrigerant system includes a gas-liquid separator, an oil separator, a liquid storage tank, a heat recovery plate exchanger, an auxiliary plate exchanger, a CHILLER plate exchanger, an air heat exchanger, a pressure switch, a high-pressure sensor, a low-pressure sensor, and a second filter; the air heat exchanger is connected to the liquid storage tank through an electronic expansion valve and a second check valve and a fourth check valve, the liquid storage tank is connected to the auxiliary plate exchanger through an auxiliary expansion valve, the auxiliary plate exchanger is connected to the gas-liquid separator through a second filter, the auxiliary plate exchanger is connected to the CHILLER plate exchanger through a solenoid valve and to the gas-liquid separator through a heat recovery valve, the gas-liquid separator is connected to the air heat exchanger through a heat recovery plate exchanger, the air heat exchanger is connected to the CHILLER plate exchanger through a four-way valve, the CHILLER plate exchanger is connected to a stop valve, the four-way valve is connected to the oil separator through a third check valve, the third check valve is connected to the gas-liquid separator through a bypass valve, the high-pressure sensor, the pressure switch, and the oil separator are sequentially connected to the outlet side of the check valve, the low-pressure sensor is connected to a gas-driven compressor, and an oil return solenoid valve is connected between the oil separator and the low-pressure sensor.

[0009] The engine is connected to the oil tank through an oil pump, and the engine is respectively connected to the exhaust heat exchanger and the oil filter, and the exhaust heat exchanger is sequentially connected to the exhaust muffler and the condensate neutralizer, and the exhaust heat exchanger is connected to the water tank through a cooling water pump, and the engine is respectively connected to the heat recovery plate exchanger and the air heat exchanger through a cooling water three-way valve.

[0010] The engine is connected to a gas solenoid valve, a gas zeroing valve, a gas mixing valve and an air intake pipe.

[0011] The power air conditioning system includes 4 operating modes:

[0012] Electric drive compressor single mode: the mode in which only the electric drive compressor is running;

[0013] Gas engine driven compressor single mode; mode in which only the gas engine drives the compressor to operate;

[0014] Hybrid mode dominated by electric drive compressor: the electric drive compressor remains unchanged after being adjusted to the optimal operating frequency, and the gas engine driven compressor is adjusted according to the load;

[0015] A hybrid mode dominated by gas engine driven compressors: the gas engine driven compressor is adjusted to the optimal operating speed and remains unchanged, while the electric driven compressor is adjusted according to the load;

[0016] The gas engine driven compressor is regulated by the gas engine control substrate, and the electric driven compressor is regulated by the electric driven compressor control substrate.

[0017] Energy efficiency priority mode: When the cooling condition is partially loaded, the electric drive compressor single mode is prioritized, and when the capacity is insufficient, it automatically switches to the hybrid mode dominated by the electric drive compressor. When the heating condition is partially loaded, the gas engine driven compressor single mode is prioritized, and when the capacity is insufficient, it automatically switches to the hybrid mode dominated by the gas engine driven compressor.

[0018] In the electric energy priority mode, when the cooling condition is partially loaded, the electric drive compressor single mode is prioritized, and when the capacity is insufficient, it automatically switches to the mixed mode dominated by the electric drive compressor. In the heating condition, when the heating condition is partially loaded, the gas engine driven compressor single mode is prioritized, and when the capacity is insufficient, it automatically switches to the mixed mode dominated by the electric drive compressor.

[0019] The utility model simultaneously arranges a gas engine driven compressor and an electric driven compressor in the unit, designs the two in the same refrigerant system, and enters the optimal control scheme into the control program. The hybrid power heat pump air conditioning unit can execute the operation mode with the lowest operation cost according to the set local electricity price and gas price, thereby solving the problem that a heat pump air conditioner driven by a single energy source cannot achieve a balanced energy structure and cannot reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a new hybrid air conditioning system;

[0021] Figure 2 is the relationship diagram between air conditioning load rate and operation ratio;

[0022] In the figure: 1, engine, 2, belt, 3, gas driven compressor, 4, oil separator, 5, four-way valve, 6, air heat exchanger, 7, electronic expansion valve, 8, electric driven compressor, 9, one-way valve 1, 10, filter 1, 11, gas-liquid separator, 12, bypass valve, 13, auxiliary expansion valve, 14, exhaust heat recovery valve, 15, pressure switch, 16, high pressure sensor, 17, low pressure sensor, 18, fan motor, 19, one-way valve 2, 20, cooling water three-way valve, 21, cooling water pump, 22, cooling water tank, 2 3. Exhaust heat exchanger, 24. Exhaust silencer, 25. Exhaust hood, 26. Condensate neutralizer, 27. Gas solenoid valve, 28. Gas zeroing valve, 29. Mixing valve, 30. Intake pipe, 31. Oil tank, 32. Oil pump, 33. Heat recovery plate heat exchanger, 34. Oil return solenoid valve, 35. Filter 2, 36. Oil filter, 37. Oil filter cooler, 38. Liquid storage tank, 39. Auxiliary plate heat exchanger, 40. Solenoid valve, 41. Check valve 3, 42. Stop valve, 43. Check valve 4, 44. CHILLER plate heat exchanger. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments: Example 1

[0024] like Figure 1 As shown, a novel hybrid air conditioning system includes an electric drive compressor system, a gas engine driven compressor system and a set of refrigerant system shared by the two; the electric drive compressor system and the gas engine driven compressor system are connected in parallel;

[0025] The electric drive compressor system comprises an electric drive compressor 8, a one-way valve 9, and a filter 10; the one-way valve 9 is connected to the outlet side of the electric drive compressor 8, and the filter 10 is connected to the inlet side of the electric drive compressor 8;

[0026] The gas engine driven compressor system comprises a gas driven compressor 3, a belt 2, and an engine 1; the gas driven engine 1 is operated, and the gas driven compressor 3 is driven to operate through the belt 2;

[0027] The refrigerant system includes a gas-liquid separator 11, an oil separator 4, a liquid storage tank 38, a heat recovery plate exchanger 33, an auxiliary plate exchanger 39, a CHILLER plate exchanger 44, an air heat exchanger 6, a pressure switch 15, a high-pressure sensor 16, a low-pressure sensor 17, and a filter 35; the air heat exchanger 6 is connected to the liquid storage tank 38 through an electronic expansion valve 7 and a check valve 19 and a check valve 43, the liquid storage tank 38 is connected to the auxiliary plate exchanger 39 through an auxiliary expansion valve 13, the auxiliary plate exchanger 39 is connected to the gas-liquid separator 11 through a filter 35, the auxiliary plate exchanger 39 is connected to the CHILLER plate exchanger 44 through a solenoid valve 40, and the heat recovery plate exchanger 44 is connected to the auxiliary plate exchanger 39 through a filter 35. Valve 14 is connected to the gas-liquid separator 11, the gas-liquid separator 11 is connected to the air heat exchanger 6 through the heat recovery plate exchanger 33, the air heat exchanger 6 is connected to the CHILLER plate exchanger 44 through the four-way valve 5, the CHILLER plate exchanger 44 is connected to the stop valve 42, the four-way valve 5 is connected to the oil separator 4 through the one-way valve three 41, the one-way valve three 41 is connected to the gas-liquid separator 11 through the bypass valve 12, the high-pressure sensor 16, the pressure switch 15, and the oil separator 4 are connected to the outlet side of the one-way valve 9 in sequence, the low-pressure sensor 17 is connected to the gas-driven compressor 3, and the oil return solenoid valve 34 is connected between the oil separator 4 and the low-pressure sensor 17.

[0028] The engine 1 is connected to the oil tank 31 through the oil pump 32, and the engine 1 is respectively connected to the exhaust heat exchanger 23 and the oil filter 36. The exhaust heat exchanger 23 is sequentially connected to the exhaust silencer 24 and the condensate neutralizer 26. The exhaust heat exchanger 23 is connected to the water tank 22 through the cooling water pump 21, and the engine 1 is respectively connected to the heat recovery plate exchanger 33 and the air heat exchanger 6 through the cooling water three-way valve 20.

[0029] The engine 1 is connected to a gas solenoid valve 27 , a gas zeroing valve 28 , a gas mixing valve 29 and an air intake pipe 30 . Example 2

[0030] The power air conditioning system described in Example 1 includes 4 operating modes:

[0031] Electric drive compressor single mode: the mode in which only the electric drive compressor is running;

[0032] Gas engine driven compressor single mode; mode in which only the gas engine drives the compressor to operate;

[0033] Hybrid mode dominated by electric drive compressor: the electric drive compressor remains unchanged after being adjusted to the optimal operating frequency, and the gas engine driven compressor is adjusted according to the load;

[0034] A hybrid mode dominated by gas engine driven compressors: the gas engine driven compressor is adjusted to the optimal operating speed and remains unchanged, while the electric driven compressor is adjusted according to the load;

[0035] The gas engine driven compressor is regulated by the gas engine control substrate, and the electric driven compressor is regulated by the electric driven compressor control substrate.

[0036] Energy efficiency priority mode: When the cooling condition is partially loaded, the electric drive compressor single mode is prioritized, and when the capacity is insufficient, it automatically switches to the hybrid mode dominated by the electric drive compressor. When the heating condition is partially loaded, the gas engine driven compressor single mode is prioritized, and when the capacity is insufficient, it automatically switches to the hybrid mode dominated by the gas engine driven compressor.

[0037] In the electric energy priority mode, when the cooling condition is partially loaded, the electric drive compressor single mode is prioritized, and when the capacity is insufficient, it automatically switches to the mixed mode dominated by the electric drive compressor. In the heating condition, when the heating condition is partially loaded, the gas engine driven compressor single mode is prioritized, and when the capacity is insufficient, it automatically switches to the mixed mode dominated by the electric drive compressor.

[0038] The working process of the four operating modes of the air conditioning system is as follows:

[0039] 1. Electric drive compressor single mode: select this mode under partial load conditions of refrigeration conditions. When the system operates in this mode, only the electric drive compressor operates.

[0040] 2. Gas engine driven compressor single mode: Select this mode under partial load conditions in heating conditions. When the system operates in this mode, the gas engine drives the compressor to operate.

[0041] 3. Hybrid mode dominated by electric drive compressor: In the energy efficiency priority mode refrigeration condition, this mode is selected when the electric drive compressor single mode is still judged to be insufficient. When the system operates in this mode, the electric drive compressor is adjusted to the optimal operating frequency and remains unchanged, and the gas engine driven compressor is adjusted according to the load.

[0042] In the heating condition of the electric energy priority mode, this mode is selected when the electric drive compressor single mode is still judged to be insufficient. When the system operates in this mode, the electric drive compressor is adjusted to the optimal operating frequency and remains unchanged, and the gas engine driven compressor is adjusted according to the load.

[0043] 4. Hybrid mode dominated by gas engine driven compressor: In the heating condition of energy efficiency priority mode, this mode is selected when the gas engine driven compressor single mode is still judged to be insufficient. When the system operates in this mode, the gas engine driven compressor is adjusted to the optimal operating speed and remains unchanged, and the electric driven compressor is adjusted according to the load.

Claims

1. A new hybrid air conditioning system, characterized in that: It includes an electric drive compressor system, a gas engine driven compressor system and a set of refrigerant system shared by the two; the electric drive compressor system and the gas engine driven compressor system are connected in parallel; The electric-driven compressor system comprises an electric-driven compressor (8), a one-way valve (9), and a filter (10); the one-way valve (9) is connected to the outlet side of the electric-driven compressor (8), and the filter (10) is connected to the inlet side of the electric-driven compressor (8); The gas engine driven compressor system comprises a gas driven compressor (3), a belt (2), and an engine (1); the gas driven engine (1) is in operation, and the gas driven compressor (3) is driven to operate via the belt (2); The refrigerant system comprises a gas-liquid separator (11), an oil separator (4), a liquid storage tank (38), a heat recovery plate exchanger (33), an auxiliary plate exchanger (39), a CHILLER plate exchanger (44), an air heat exchanger (6), a pressure switch (15), a high-pressure sensor (16), a low-pressure sensor (17), and a second filter (35); the air heat exchanger (6) is connected to the liquid storage tank (38) via an electronic expansion valve (7) and a second check valve (19), and a fourth check valve (43); the liquid storage tank (38) is connected to the auxiliary plate exchanger (39) via an auxiliary expansion valve (13); the auxiliary plate exchanger (39) is connected to the gas-liquid separator (11) via a second filter (35); the auxiliary plate exchanger (39) is connected to the CHILLER plate exchanger (44) via a solenoid valve (40), and the heat recovery plate exchanger (44) via a second filter (35); The valve (14) is connected to the gas-liquid separator (11), the gas-liquid separator (11) is connected to the air heat exchanger (6) through the heat recovery plate exchanger (33), the air heat exchanger (6) is connected to the CHILLER plate exchanger (44) through the four-way valve (5), the CHILLER plate exchanger (44) is connected to the stop valve (42), the four-way valve (5) is connected to the oil separator (4) through the one-way valve three (41), the one-way valve three (41) is connected to the gas-liquid separator (11) through the bypass valve (12), the high-pressure sensor (16), the pressure switch (15), and the oil separator (4) are connected to the outlet side of the one-way valve (9) in sequence, the low-pressure sensor (17) is connected to the gas-driven compressor (3), and an oil return solenoid valve (34) is connected between the oil separator (4) and the low-pressure sensor (17).

2. A novel hybrid air conditioning system according to claim 1, characterized in that: The engine (1) is connected to an oil tank (31) via an oil pump (32); the engine (1) is respectively connected to a smoke exhaust heat exchanger (23) and an oil filter (36); the smoke exhaust heat exchanger (23) is sequentially connected to a smoke exhaust silencer (24) and a condensate neutralizer (26); the smoke exhaust heat exchanger (23) is connected to a water tank (22) via a cooling water pump (21); and the engine (1) is respectively connected to a heat recovery plate exchanger (33) and an air heat exchanger (6) via a cooling water three-way valve (20).

3. A novel hybrid air conditioning system according to claim 1, characterized in that: The engine (1) is connected to a gas solenoid valve (27), a gas zeroing valve (28), a gas mixing valve (29) and an air intake pipe (30).

4. A novel hybrid air conditioning system according to any one of claims 1 to 3, characterized in that: The power air conditioning system includes 4 operating modes: Electric drive compressor single mode: the mode in which only the electric drive compressor is running; Gas engine driven compressor single mode; mode in which only the gas engine drives the compressor to operate; Hybrid mode dominated by electric drive compressor: the electric drive compressor remains unchanged after being adjusted to the optimal operating frequency, and the gas engine driven compressor is adjusted according to the load; A hybrid mode dominated by gas engine driven compressors: the gas engine driven compressors are regulated to the optimal operating speed and remain unchanged, while the electric driven compressors are adjusted according to the load; The gas engine driven compressor is regulated by the gas engine control substrate, and the electric driven compressor is regulated by the electric driven compressor control substrate.

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