CN115751495A - Gas heat pump multi-split air conditioner system, control method and air conditioner - Google Patents
Gas heat pump multi-split air conditioner system, control method and air conditioner Download PDFInfo
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- CN115751495A CN115751495A CN202211244150.8A CN202211244150A CN115751495A CN 115751495 A CN115751495 A CN 115751495A CN 202211244150 A CN202211244150 A CN 202211244150A CN 115751495 A CN115751495 A CN 115751495A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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Abstract
The invention discloses a gas heat pump multi-split system, a control method and an air conditioner in the technical field of gas heat pump equipment, and aims to solve the problem that in the prior art, a gas heat pump unit has a poor effect of recycling waste heat of an engine under different conditions. The system comprises a working system, a heat recovery system and an engine system, wherein the working system comprises a first compressor, an oil separator, a four-way valve, an outdoor unit heat exchanger, an indoor unit heat exchanger and a gas-liquid separator; the heat recovery system comprises a second compressor, an indoor unit condenser, a heat recovery electronic expansion valve and a heat recoverer; the engine system comprises a water pump, an engine, a three-way valve and a radiator; the heat recovery system and the working system are separated, so that the heat recovery system and the working system are mutually independent and do not interfere with each other, the waste heat of the engine is sent to the air outlet of the indoor unit heat exchanger, the waste heat of the engine is recycled under different conditions, and the actual use effect of the gas heat pump unit is ensured.
Description
Technical Field
The invention relates to a gas heat pump multi-split air conditioner system, a control method and an air conditioner, and belongs to the technical field of gas heat pump equipment.
Background
Different users often have different demands on the air outlet temperature of the internal machine. For example, when the ambient humidity is high, the humidity needs to be reduced by dehumidification by an air conditioner. However, when a conventional air conditioning system dehumidifies, the outlet air temperature of the indoor unit of the conventional air conditioning system is often low, so that the comfort of use is poor. The conventional air conditioning system with the reheating function utilizes the heat of condensation of the air conditioner to improve the air outlet temperature, so that the condensation pressure is reduced, and the reliability of a unit is influenced.
The gas heat pump air conditioner is an air conditioning system which utilizes a gas engine to drive a compressor to complete cooling and heating operation, and compared with the traditional electric air conditioner, the gas heat pump air conditioner can recover the waste heat of the engine. The engine waste heat of the conventional gas heat pump is used for improving the low-temperature heating effect, and because the waste heat recovery device is arranged on the low-pressure side of the refrigerating system, the evaporation pressure of the refrigerating system is increased due to overhigh engine heat in an extremely low-temperature environment, so that the heat exchange efficiency of an evaporator for exchanging heat with air is reduced, and during refrigeration, the engine waste heat can be directly discharged into the air to cause certain waste. The existing gas heat pump unit has poor recycling effect on the waste heat of the engine under different conditions, so that the waste phenomenon is easy to occur, and the actual use effect of the gas heat pump unit is influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a gas heat pump multi-split system, a control method and an air conditioner, and solves the problem that the gas heat pump unit has poor recycling effect on the waste heat of an engine under different conditions.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides a gas heat pump multi-split system, which comprises a working system, a heat recovery system and an engine system; the working system is used for executing refrigeration, dehumidification or heating work and comprises an indoor unit heat exchanger; the engine system is used for recovering the waste heat of the engine;
the heat recovery system comprises a second compressor, the output end of the second compressor is connected with an indoor unit condenser, the indoor unit condenser is connected with a heat recovery electronic expansion valve, the heat recovery electronic expansion valve is connected with a heat recoverer, the heat recoverer is connected with the input end of the second compressor, the heat recovery system is used for sending waste heat to an air outlet of the indoor unit heat exchanger in the working system, and the waste heat is used for reheating to improve the outlet temperature during refrigeration or dehumidification; when heating, the waste heat is used for improving the outlet air temperature of the air outlet and does not influence the heat exchange between the refrigerant and the air.
Furthermore, the working system comprises a first compressor, the output end of the first compressor is connected with the input end of the oil separator, the output end of the oil separator is connected with the input end of the first compressor, the output end of the oil separator is connected with the first end of the four-way valve, the second end of the four-way valve is connected with the outdoor unit heat exchanger, the outdoor unit heat exchanger is connected with the outdoor unit electronic expansion valve, the outdoor unit electronic expansion valve is connected with the indoor unit electronic expansion valve, the indoor unit electronic expansion valve is connected with the indoor unit heat exchanger, the indoor unit heat exchanger is connected with the third end of the four-way valve, the fourth end of the four-way valve is connected with the input end of the gas-liquid separator, the output end of the gas-liquid separator is connected with the input end of the first compressor, a first fan is arranged on the outdoor unit heat exchanger, and a second fan is arranged on the indoor unit heat exchanger.
Further, the engine system comprises a water pump and an engine for transmitting power to the first compressor and the second compressor, the output end of the water pump is connected with the input end of an internal pipeline of the engine, the output end of the internal pipeline of the engine is connected with the inlet of a three-way valve, the first outlet of the three-way valve is connected with the heat recoverer, the heat recoverer is connected with the input end of the water pump, the second outlet of the three-way valve is connected with a radiator, and the radiator is connected with the input end of the water pump;
the first compressor and the second compressor are both provided with clutches, the indoor unit heat exchanger and the indoor unit condenser are arranged side by side and tightly attached, and the outdoor unit heat exchanger and the radiator are arranged side by side and tightly attached.
Further, the first compressor and the second compressor are in belt transmission with the engine.
Furthermore, valves are arranged at two ends of the indoor unit heat exchanger and two ends of the indoor unit condenser.
Further, the opening range of the three-way valve is [0, 100].
In a second aspect, the present invention provides a method for controlling a gas heat pump multiple on-line system, where the gas heat pump multiple on-line system in the first aspect is adopted, and the method includes: confirming the working state of the second compressor according to the working mode of the current system;
acquiring the air outlet temperature of an indoor unit heat exchanger, comparing the air outlet temperature with a preset value, and adjusting the waste heat recovery state of the heat recoverer according to the comparison result and the working mode of the system;
the working modes comprise a cooling mode, a dehumidification mode and a heating mode.
Further, according to the current system operation mode, the confirming of the operation state of the second compressor includes:
if the working mode is a refrigeration mode, the second compressor is in a closed state;
if the working mode is the dehumidification mode, the second compressor is in an opening state;
if the working mode is the heating mode, the second compressor is in an opening state.
Further, acquiring the air outlet temperature of the heat exchanger of the indoor unit, comparing the air outlet temperature with a preset value, and adjusting the waste heat recovery state of the heat recovery device according to the comparison result and the working mode of the system comprises:
in the cooling mode:
when the second compressor is in a closed state, the waste heat recovery of the heat recoverer is in a stop state, and the work is finished;
in the dehumidification mode:
the second compressor is in an open state;
wherein, if X>X n The waste heat recovery effect of the heat recoverer is reduced;
if X<X n The waste heat recovery effect of the heat recoverer is increased;
if X = X n The waste heat recovery effect of the heat recoverer is not changed;
in the heating mode:
the second compressor is in an open state;
wherein, if X>X n The waste heat recovery effect of the heat recoverer is reduced;
if X<X n The waste heat recovery effect of the heat recoverer is increased;
if X = X n If the waste heat recovery effect of the heat recoverer is not changed;
wherein X is the outlet air temperature of the heat exchanger of the indoor unit n Is a preset temperature value.
In a third aspect, the present invention provides an air conditioner equipped with the gas heat pump multi-split system of the first aspect.
Compared with the prior art, the invention has the following beneficial effects:
this gas heat pump multi-split system is through separating heat recovery system and operating system for both mutual independence, mutual noninterference, and send the waste heat of engine to the air outlet department of indoor set heat exchanger, thereby carry out recycle work to the engine waste heat under different situation, guaranteed gas heat pump set's in-service use effect.
Drawings
Fig. 1 is a schematic system structure diagram of a gas heat pump multi-split system provided in an embodiment of the present invention;
in the figure: 1. a first compressor; 2. an oil separator; 3. a four-way valve; 4. an outdoor heat exchanger; 5. an electronic expansion valve of the outdoor unit; 6. an electronic expansion valve of the indoor unit; 7. an indoor unit heat exchanger; 8. a gas-liquid separator; 9. an engine; 10. a three-way valve; 11. a heat sink; 12. a water pump; 13. a second compressor; 14. an indoor unit condenser; 15. a heat recovery electronic expansion valve; 16. a heat recovery device; 17. a first fan; 18. and a second fan.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The first embodiment is as follows:
as shown in fig. 1, the present invention provides a gas heat pump multiple on-line system, which comprises a working system, a heat recovery system and an engine system; the working system is used for executing refrigeration, dehumidification or heating work and comprises an indoor unit heat exchanger; the engine system is used for recovering the waste heat of the engine; the working system comprises a first compressor 1, wherein the output end of the first compressor 1 is connected with the input end of an oil separator 2, the output end of the oil separator 2 is connected with the input end of the first compressor 1, the output end of the oil separator 2 is connected with the first end of a four-way valve 3, the second end of the four-way valve 3 is connected with an outdoor heat exchanger 4, the outdoor heat exchanger 4 is connected with an outdoor electronic expansion valve 5, the outdoor electronic expansion valve 5 is connected with an indoor electronic expansion valve 6, the indoor electronic expansion valve 6 is connected with an indoor heat exchanger 7, the indoor heat exchanger 7 is connected with the third end of the four-way valve 3, the fourth end of the four-way valve 3 is connected with the input end of a gas-liquid separator 8, the output end of the gas-liquid separator 8 is connected with the input end of the first compressor 1, a first fan 17 is arranged on the heat exchanger 4, and a second fan 18 is arranged on the indoor heat exchanger 7; the heat recovery system comprises a second compressor 13, the output end of the second compressor 13 is connected with an indoor unit condenser 14, the indoor unit condenser 14 is connected with a heat recovery electronic expansion valve 15, the heat recovery electronic expansion valve 15 is connected with a heat recoverer 16, the heat recoverer 16 is connected with the input end of the second compressor 13, the heat recovery system is used for sending waste heat to an air outlet of the indoor unit heat exchanger in the working system, and the waste heat is used for reheating to improve the outlet temperature when refrigeration or dehumidification is carried out; when heating, the waste heat is used for improving the outlet air temperature of the air outlet without influencing the heat exchange between the refrigerant and the air; the engine system comprises a water pump 12 and an engine 9 for transmitting power to the first compressor 1 and the second compressor 13, wherein the output end of the water pump 12 is connected with the input end of an internal pipeline of the engine 9, the output end of the internal pipeline of the engine 9 is connected with the inlet of a three-way valve 10, the first outlet of the three-way valve 10 is connected with a heat recoverer 16, the heat recoverer 16 is connected with the input end of the water pump 12, the second outlet of the three-way valve 10 is connected with a radiator 11, and the radiator 11 is connected with the input end of the water pump 12; the first compressor 1 and the second compressor 13 are both provided with clutches, the indoor unit heat exchanger 7 and the indoor unit condenser 14 are arranged side by side and closely attached, and the outdoor unit heat exchanger 4 and the radiator 11 are arranged side by side and closely attached.
Specifically, the first fan 17 is used for assisting the outdoor heat exchanger 4 to perform heat exchange work with air, and the second fan 18 is used for assisting the indoor heat exchanger 7 to perform heat exchange work with air; the two clutches are used for controlling the opening and closing of the first compressor 1 and the second compressor 13, respectively.
In the present embodiment, the first compressor 1 and the second compressor 13 are both in belt transmission with the engine 9, so as to reduce vibration generated during transmission.
And valves are arranged at two ends of the indoor unit heat exchanger 7 and two ends of the indoor unit condenser 14, so that the on-off of pipelines at two ends of the indoor unit heat exchanger 7 and two ends of the indoor unit condenser 14 can be conveniently controlled.
The present embodiment further includes that the opening degree of the three-way valve 10 is in the range of [0, 100].
Specifically, the opening of the three-way valve 10 ranges from 0 to 100% and is used to control the flow of the cooling water to the first opening and the second opening.
The second embodiment:
the embodiment provides a control method for a gas heat pump multiple on-line system, which adopts the gas heat pump multiple on-line system of the embodiment one, and comprises the following steps:
confirming the working state of the second compressor 13 according to the working mode of the current system;
acquiring the air outlet temperature of the indoor unit heat exchanger 7, comparing the air outlet temperature with a preset value, and adjusting the waste heat recovery working state of the heat recovery device 16 according to the comparison result and the working mode of the system;
the working modes comprise a cooling mode, a dehumidifying mode and a heating mode.
When the working mode of the system is a cooling mode or a dehumidifying mode:
the refrigerant discharged from the output end of the first compressor 1 passes through the oil separator 2 and the first end of the four-way valve 3 and then enters the interior of the four-way valve 3, at the moment, the first end and the second end of the four-way valve 3 are connected, the third end and the fourth end are connected, the refrigerator is discharged from the second end of the four-way valve 3 and then sequentially passes through the outdoor unit heat exchanger 4, the outdoor unit electronic expansion valve 5 and the indoor unit electronic expansion valve 6 and then enters the indoor unit heat exchanger 7, then passes through the third end of the four-way valve 3 and then enters the four-way valve 3, and the refrigerant is discharged from the fourth end of the four-way valve 3 and then enters the input end of the first compressor 1 through the gas-liquid separator 8, so that the cycle is completed.
When the working mode of the system is a heating mode:
the refrigerant discharged from the output end of the first compressor 1 passes through the oil separator 2 and the first end of the four-way valve 3 and then enters the interior of the four-way valve 3, at the moment, the first end and the third end of the four-way valve 3 are connected, the second end and the fourth end are connected, the refrigerator is discharged from the third end of the four-way valve 3 and then passes through the indoor unit heat exchanger 7, the indoor unit electronic expansion valve 6 and the outdoor unit electronic expansion valve 5 and then enters the outdoor unit heat exchanger 4, and then passes through the second end of the four-way valve 3 and enters the four-way valve 3, and the refrigerant is discharged from the fourth end of the four-way valve 3 and then enters the input end of the first compressor 1 through the gas-liquid separator 8, so that the circulation is completed.
In the present embodiment, in the cooling mode:
the second compressor 13 is in the off state, and the waste heat recovery operation of the heat recoverer 16 is stopped.
Specifically, when the system is in the cooling mode, the cooling water enters the input end of the water pump 12 after being discharged from the output end of the water pump 12 and passing through the three-way valve 10 and the radiator 11, the circulation is completed, the heat dissipation work is performed on the cooling water by the radiator 11, and because the outdoor heat exchanger 4 and the radiator 11 are arranged side by side and closely attached, sufficient heat exchange can be performed between the outdoor heat exchanger and the radiator, so that the heat of the engine 9 is fully utilized, and the waste is avoided.
In the dehumidification mode:
the second compressor 13 is in an open state, in which both the first and second openings of the three-way valve 10 are in an open state, wherein X is>X n If the opening degree of the first opening of the three-way valve 10 is reduced, the waste heat recovery effect of the heat recoverer 16 is reduced;
if X<X n If so, the opening degree of the first opening of the three-way valve 10 is increased, and the waste heat recovery effect of the heat recoverer 16 is increased;
if X = X n If the opening degree of the first opening of the three-way valve 10 is kept unchanged, the waste heat recovery effect of the heat recoverer 16 is unchanged;
in the heating mode:
the second compressor 13 is in an open state, in which both the first and second openings of the three-way valve 10 are in an open state,
wherein, if X>X n If the opening degree of the first opening of the three-way valve 10 is reduced, the waste heat recovery effect of the heat recoverer 16 is reduced;
if X<X n If so, the opening degree of the first opening of the three-way valve 10 is increased, and the waste heat recovery effect of the heat recoverer 16 is increased;
if X = X n If the opening degree of the first opening of the three-way valve 10 is kept unchanged, the waste heat recovery effect of the heat recoverer 16 is unchanged;
wherein X is the outlet air temperature of the indoor heat exchanger 7, X n Is a preset temperature value;
specifically, when the second compressor 13 is in an open state, the refrigerant discharged from the output end of the second compressor 13 sequentially passes through the indoor unit condenser 14, the heat recovery electronic expansion valve 15 and the heat recovery device 16, and then enters the input end of the second compressor 13 to complete the cycle; when the first opening and the second opening of the three-way valve 10 are both in an open state, after cooling water discharged from the output end of the water pump 12 passes through the three-way valve 10, part of the cooling water is discharged from the second outlet, passes through the radiator 11 and then enters the input end of the water pump 12 to complete circulation, the other part of the cooling water is discharged from the first outlet, passes through the heat recoverer 16 and then enters the input end of the water pump 12 to complete circulation, the cooling water passing through the heat recoverer 16 exchanges heat with refrigerant, and then the indoor unit condenser 14 performs heat dissipation work, and as the indoor unit heat exchanger 7 and the indoor unit condenser 14 are arranged side by side and are closely attached, waste heat of the engine 9 is sent to the air outlet of the indoor unit heat exchanger 7.
When the working mode of the system is a dehumidification mode or a heating mode, when X is used>X n When the opening degree of the first opening of the three-way valve 10 is reduced, the flow rate of cooling water flowing to the heat recovery device 16 is reduced, so that the heat exchange work inside the heat recovery device 16 is influenced, the waste heat recovery effect of the heat recovery device 16 is reduced, after the heat exchange work, the temperature of refrigerant in a heat recovery system is reduced, the heat emitted by the indoor unit condenser 14 is reduced, and the air outlet temperature of the indoor unit heat exchanger 7 is reduced to be close to the preset temperature value; when X is present<X n When the opening degree of the first opening of the three-way valve 10 is increased, the flow rate of cooling water flowing to the heat recovery device 16 is increased, the waste heat recovery effect of the heat recovery device 16 is increased, and after heat exchange is carried out, the temperature of refrigerant in a heat recovery system is increased, so that the heat emitted by the condenser 14 of the indoor unit is increased, the air outlet temperature of the heat exchanger 7 of the indoor unit is increased, and the air outlet temperature is close to a preset temperature value; when X = X n Then, the opening degree of the first opening of the three-way valve 10 is kept constant, and the waste heat recovery effect of the heat recovery device 16 is not changed.
The heat recovery system and the working system are separated, so that the heat recovery system and the working system are mutually independent and do not interfere with each other, the waste heat of the engine 9 is sent to the air outlet of the indoor unit heat exchanger 7, and the heat of the engine 9 can be fully utilized in the refrigerating mode to avoid waste; in the dehumidification mode, the air outlet temperature of the indoor unit heat exchanger 7 can be increased; when the heating mode is adopted, the air outlet temperature of the indoor unit heat exchanger 7 can be increased, and heat exchange between the refrigerant and air is not influenced, so that the waste heat of the engine is recycled under different conditions, and the actual use effect of the gas heat pump unit is ensured.
Example three:
the present embodiment provides an air conditioner configured with the gas heat pump multi-split air-conditioning system of the first embodiment, and the gas heat pump multi-split air-conditioning system control method of the second embodiment performs the recycling operation of the engine waste heat under different conditions.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.
Claims (10)
1. The gas heat pump multi-split system is characterized by comprising a working system, a heat recovery system and an engine system;
the working system is used for executing refrigeration, dehumidification or heating work and comprises an indoor unit heat exchanger;
the engine system is used for recovering the waste heat of the engine;
the heat recovery system comprises a second compressor, the output end of the second compressor is connected with an indoor unit condenser, the indoor unit condenser is connected with a heat recovery electronic expansion valve, the heat recovery electronic expansion valve is connected with a heat recoverer, the heat recoverer is connected with the input end of the second compressor, the heat recovery system is used for sending waste heat to an air outlet of the indoor unit heat exchanger in the working system, and the waste heat is used for reheating to improve the outlet temperature during refrigeration or dehumidification; when heating, the waste heat is used for improving the air outlet temperature of the air outlet and does not influence the heat exchange between the refrigerant and the air.
2. The gas heat pump multi-split air conditioner system according to claim 1, wherein the working system comprises a first compressor, an output end of the first compressor is connected with an input end of an oil separator, an output end of the oil separator is connected with an input end of the first compressor, an output end of the oil separator is connected with a first end of a four-way valve, a second end of the four-way valve is connected with an outdoor heat exchanger, the outdoor heat exchanger is connected with the outdoor electronic expansion valve, the outdoor electronic expansion valve is connected with an indoor electronic expansion valve, the indoor electronic expansion valve is connected with an indoor heat exchanger, the indoor heat exchanger is connected with a third end of the four-way valve, a fourth end of the four-way valve is connected with an input end of a gas-liquid separator, an output end of the gas-liquid separator is connected with an input end of the first compressor, a first fan is arranged on the outdoor heat exchanger, and a second fan is arranged on the indoor heat exchanger.
3. The gas heat pump multi-split air conditioner system as claimed in claim 2, wherein the engine system comprises a water pump and an engine for supplying power to the first compressor and the second compressor, an output end of the water pump is connected with an input end of the internal pipeline of the engine, an output end of the internal pipeline of the engine is connected with an inlet of a three-way valve, a first outlet of the three-way valve is connected with the heat recoverer, the heat recoverer is connected with an input end of the water pump, a second outlet of the three-way valve is connected with a radiator, and the radiator is connected with an input end of the water pump;
the first compressor and the second compressor are both provided with clutches, the indoor unit heat exchanger and the indoor unit condenser are arranged side by side and tightly attached, and the outdoor unit heat exchanger and the radiator are arranged side by side and tightly attached.
4. The gas heat pump multiple on-line system according to claim 3, wherein the first compressor and the second compressor are belt driven with the engine.
5. The gas heat pump multi-split system as recited in claim 3 wherein valves are provided at both ends of said indoor unit heat exchanger and said indoor unit condenser.
6. The gas heat pump multiple on-line system according to claim 3, wherein the three-way valve has an opening range of [0, 100].
7. A control method for a gas heat pump multiple on-line system, characterized in that the gas heat pump multiple on-line system of any one of claims 1 to 6 is adopted, and the method comprises the following steps:
confirming the working state of the second compressor according to the working mode of the current system;
acquiring the air outlet temperature of the heat exchanger of the indoor unit, comparing the air outlet temperature with a preset value, and adjusting the waste heat recovery state of the heat recoverer according to the comparison result and the working mode of the system;
the working modes comprise a cooling mode, a dehumidifying mode and a heating mode.
8. The gas heat pump multiple on-line system control method as claimed in claim 7, wherein the confirming of the operation state of the second compressor according to the operation mode of the current system comprises:
if the working mode is a refrigeration mode, the second compressor is in a closed state;
if the working mode is the dehumidification mode, the second compressor is in an opening state;
if the working mode is the heating mode, the second compressor is in an opening state.
9. The control method of the gas heat pump multi-split air-conditioning system according to claim 8, wherein the step of obtaining the outlet air temperature of the heat exchanger of the indoor unit, comparing the outlet air temperature with a preset value, and adjusting the waste heat recovery state of the heat recovery device according to the comparison result and the working mode of the system comprises the steps of:
in the cooling mode:
when the second compressor is in a closed state, the waste heat recovery of the heat recoverer is in a stop state, and the work is finished;
in the dehumidification mode:
the second compressor is in an on state;
wherein, if X>X n The waste heat recovery effect of the heat recoverer is reduced;
if X<X n The waste heat recovery effect of the heat recoverer is increased;
if X = X n The waste heat recovery effect of the heat recoverer is not changed;
in the heating mode:
the second compressor is in an open state;
wherein, if X>X n The waste heat recovery effect of the heat recoverer is reduced;
if X<X n The waste heat recovery effect of the heat recoverer is increased;
if X = X n The waste heat recovery effect of the heat recoverer is not changed;
wherein X is the outlet air temperature of the heat exchanger of the indoor unit n Is a preset temperature value.
10. An air conditioner, characterized in that the air conditioner is provided with the gas heat pump multi-split air-conditioning system as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211244150.8A CN115751495A (en) | 2022-10-12 | 2022-10-12 | Gas heat pump multi-split air conditioner system, control method and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211244150.8A CN115751495A (en) | 2022-10-12 | 2022-10-12 | Gas heat pump multi-split air conditioner system, control method and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN115751495A true CN115751495A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211244150.8A Pending CN115751495A (en) | 2022-10-12 | 2022-10-12 | Gas heat pump multi-split air conditioner system, control method and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115751495A (en) |
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2022
- 2022-10-12 CN CN202211244150.8A patent/CN115751495A/en active Pending
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