KR20140017780A - Control method of multiple tandem type heat pump system with a single inverter - Google Patents

Control method of multiple tandem type heat pump system with a single inverter Download PDF

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KR20140017780A
KR20140017780A KR1020120084291A KR20120084291A KR20140017780A KR 20140017780 A KR20140017780 A KR 20140017780A KR 1020120084291 A KR1020120084291 A KR 1020120084291A KR 20120084291 A KR20120084291 A KR 20120084291A KR 20140017780 A KR20140017780 A KR 20140017780A
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South Korea
Prior art keywords
compressor
inverter
heat pump
control
temperature
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KR1020120084291A
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Korean (ko)
Inventor
김현주
이호생
문덕수
정동호
이승원
손지훈
장기창
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한국해양과학기술원
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Priority to KR1020120084291A priority Critical patent/KR20140017780A/en
Publication of KR20140017780A publication Critical patent/KR20140017780A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • F25B2400/0751—Details of compressors or related parts with parallel compressors the compressors having different capacities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/024—Compressor control by controlling the electric parameters, e.g. current or voltage

Abstract

The present invention is a control method of a plurality of tandem heat pump using a single inverter, more specifically, one heat pump including a compressor compressor and a plurality of general heat pumps arranged in tandem type to the maximum according to the room temperature and load judgment One heat pump and a plurality of general heat pumps including an inverter compressor that sets the operating frequency step by step within the range of conditions, and detect the status of the controlled heat pump to control the flow rate of each part and the indoor FCU. Through integrated system control including air volume control, unnecessary power consumption can be reduced, comfortable cooling and heating can be performed, and the compressor life is extended and cycle stability is prevented by preventing excessive or inefficient operation of the compressor. In charge of the part of general compressor and the remaining load ratio to inverter compressor , Separated by the part, to a method of controlling a plurality of the tandem heat pump using a single inverter to enable a variety of applications is selected and fluid control possible according to the number.

Description

Control method of multiple tandem type heat pump system with a single inverter

The present invention is a control method of a plurality of tandem heat pump using a single inverter, more specifically, one heat pump including a compressor compressor and a plurality of general heat pumps arranged in tandem type to the maximum according to the room temperature and load judgment One heat pump and a plurality of general heat pumps including an inverter compressor that sets the operating frequency step by step within the range of conditions, and detect the status of the controlled heat pump to control the flow rate of each part and the indoor FCU. Integrated system control including air volume control reduces unnecessary power consumption, provides comfortable air-conditioning, prevents excessive or inefficient operation of the compressor, and secures compressor life and cycle stability for selective and fluid control. Control rooms for multiple tandem heat pumps using a single inverter Relate to.

Heat pump is a device that absorbs heat from a low temperature heat source and heats it to a high temperature heat source.It is widely used for cooling and heating in a room.It consists of a system for cooling and heating selectively, and heats high temperature heat emitted from a condenser. And it is used for hot water supply, and the cold heat cooled by an evaporator is used for cooling of a building.

Operation control of the heat pump may be operation control through the operation of the compressor. In conventional compressors, refrigerant liquid remains in the compressor during initial operation, and the compressor starting input current frequently exceeds the limit current value. Therefore, if the compressor is repeatedly turned on and off only by a simple number, the compressor mechanism may be damaged and the motor may be damaged. Damage leads to reliability problems.

The inverter compressor performs the work of compressing the refrigerant in the heat pump, and the degree of refrigerant compression varies depending on the operating frequency. At higher operating frequencies, the inverter compressor compresses more refrigerant compared to lower frequencies. As the refrigerant compression rate increases, the refrigerant pressure increases, and the condenser temperature of the condenser increases.

As described above, the inverter compressor suppresses the increase of the condensation temperature when the maximum operating frequency is set to low, but does not perform rapid heating when the room temperature is low, thereby lowering the heating capacity and reducing product reliability.

In addition, when the maximum operating frequency is set to high, since the rising part of the condensation temperature due to the increase in the indoor temperature is not considered when the indoor temperature is high, there is a problem of overloading the inverter compressor due to the rising of the condensation temperature. If they are not operated efficiently because they are operated, excessive power consumption and equipment durability may be reduced.

Therefore, there is a need for an operation control method that enables integrated system control including control of multiple tandem heat pump systems and flow and air volume control using a single inverter control according to room temperature and load judgment.

The present invention has been made to solve the above problems,

One heat pump and several heat pumps including inverter compressor that set the maximum operating frequency step by step by arranging one heat pump including inverter compressor and several general heat pumps in tandem type Operation control within the condition range, and by detecting the state of the controlled heat pump, integrated system control including the flow of each part and the flow rate of the FCU in the room can reduce unnecessary power consumption and provide comfortable cooling and heating. It also aims to provide a control method for multiple tandem heat pumps using a single inverter that prevents excessive or inefficient operation of the compressor and secures the life of the compressor and secures the cycle stability. .

In order to achieve the above object, the present invention is a control method of a plurality of tandem heat pump using a single inverter,

One heat pump including two compressor compressors and two general heat pumps are arranged in tandem to determine the set temperature during initial operation, and set the operation frequency of the inverter compressor by setting the step frequency between the set temperature and the room temperature. To start. When the indoor temperature reaches the set temperature, the inverter compressor stops operation and detects the indoor temperature through the indoor temperature detector. Determines the detected room temperature and restarts the operation of the inverter compressor at the set operating frequency. When the three heat pumps are driven in tandem after the start of operation, the difference between the set temperature and the room temperature is continuously sensed to start stepwise operation control.

When the maximum temperature of the difference between the set temperature set by the user and the indoor temperature is 100% and the heat pump capacity is 60RT, the operation method according to the set temperature and the indoor temperature difference rate for each step is as follows.

Operating the inverter compressor at 90% when the difference between the first set temperature and the room temperature is 30% (18RT);

When the difference between the two-stage set temperature and the room temperature is 50% (30RT), out of 50% (30RT) of the total temperature difference, 33.33% (20RT) operates one general compressor at 100%, and the remaining 16.67% (10RT) Operating the inverter compressor at 50%;

When the difference between the three-stage set temperature and the room temperature is 70% (42RT), 66.66% (40RT) of the general temperature difference 70% (42RT) operates the normal compressors 1 and 2 at 100%, and the remaining 3.34% (2RT). Operating the inverter compressor at 10%;

Step 4 When the difference between the set temperature and the room temperature is 100% (60RT), the inverter compressor and general compressors 1 and 2 are operated at 100%, and the flow rate of each part depends on the heat pump status of each stage. As appropriate, the flow rate is supplied, and the indoor FCU performs the airflow control through the rotation speed control according to the heat pump state of each stage.

After four stages, the inverter compressor and the general compressors are continuously detected and controlled within the set range by the user according to the difference between the set temperature and the room temperature. The present invention relates to a control method including inverter control capable of selective and fluid control through integrated system control for controlling air volume.

In addition, by setting the operating frequency step by step according to the indoor load, the operation of the inverter compressor starts. When the set load is reached, the inverter compressor stops operation and detects the indoor load through the detector. Determines the detected indoor load and restarts the operation of the inverter compressor at the set operating frequency. When three heat pumps are driven in tandem after the start of operation, it detects the indoor load continuously and starts stepwise operation control. When the indoor load set by the user is up to 100% and the heat pump capacity is 60RT, the operation method according to the indoor load in each step is as follows.

Operating the inverter compressor at 90% when the first stage indoor load is 30% (18RT);

When the second stage indoor load is 50% (30RT), out of 50% (30RT) of the total temperature difference, 33.33% (20RT) operates one compressor at 100%, and the remaining 16.67% (10RT) uses 50% of the inverter compressor. Driving to;

When the three-stage room load is 70% (42RT), 66.66% (40RT) of the total temperature difference 70% (42RT) operates the compressors 1 and 2 at 100%, and the remaining 3.34% (2RT) drives the inverter compressor 10. Driving at%;

When the fourth stage indoor load is 100% (60RT), the inverter compressor and general compressors 1 and 2 are operated at 100%, and the flow rate of each part is equivalent to the heat pump state of each stage. Supplying the proper flow rate, the indoor FCU performs the air flow control through the rotation speed control according to the heat pump state of each stage.

In general, each setting stage is divided into a part in charge of the general compressor and the rest of the load ratio of the inverter compressor, the load ratio of each stage is the application rate for four compressors, the application rate can be applied variously depending on the number.

After four stages, the inverter compressor and the general compressors are continuously detected and controlled within the set range by the user according to the difference between the set temperature and the room temperature. The present invention relates to a control method including inverter control that enables selective and fluid control through integrated system control including air volume control.

As described above, in the control method of a plurality of tandem type heat pump systems including one inverter control according to the indoor temperature determination according to the present invention, when six heat pumps are operated in tandem, the set temperature during initial operation Determine the difference between the set temperature and the room temperature as the step frequency and start the operation of the inverter compressor. When the indoor temperature reaches the set temperature, the inverter compressor stops operation and detects the indoor temperature through the indoor temperature detector. Determines the detected room temperature and restarts the operation of the inverter compressor at the set operating frequency. Continuously detects the difference between the set temperature and the room temperature and starts the step-by-step operation control to divide the part which can be in charge of the general compressor within the set condition range and the remaining set temperature difference into the part which is in charge of the inverter compressor. It is possible to prevent unnecessary power consumption and damage to the compressor through the control including the inverter control which can be selectively and fluidly controlled through the integrated system control including the flow rate of each part according to the state of the pump and the air volume control of the FCU in the room. It works.

In addition, as a control method of a plurality of tandem type heat pump systems including one inverter control according to the indoor load judgment, when six heat pumps are operated in tandem, the set temperature is determined during initial operation and the room temperature is set to the set temperature. When it reaches, the inverter compressor stops operation, restarts the inverter compressor after 3-5 minutes, detects the load in the indoor load detector, judges the detected indoor load, and operates the inverter compressor at the set operating frequency. According to the fluctuation, the parts that can be in charge of the general compressor and the remaining load are divided into parts that are in charge of the inverter compressor within the condition range set by the user, and the flow rate of each part and the FCU of the room according to the state of the controlled heat pump Smart type with inverter control for selective and fluid control through integrated system control including airflow control By controlling operation, it is possible to promptly respond to load fluctuations, which enables comfortable air-conditioning and prevents excessive or inefficient operation of the compressor, thereby securing the life of the compressor and securing cycle stability.

1 is a configuration diagram of a control method of a plurality of tandem heat pumps using a single inverter according to the room temperature and load determination according to the first and second embodiments of the present invention,
2 is a flowchart illustrating a control method of a plurality of tandem heat pumps using a single inverter according to the indoor temperature determination according to the first embodiment of the present invention.
3 is a flow chart of a control method of a plurality of tandem heat pumps using a single inverter according to the indoor load determination according to the second embodiment of the present invention.

A control method of a plurality of tandem heat pumps using a single inverter according to the indoor temperature determination according to the present invention is as follows.

When 1 heat pump and n general heat pumps including inverter compressor are operated in tandem, the set temperature is determined during initial operation, and the difference between the set temperature and the room temperature is set by the step frequency and the inverter compressor is operated. Characterized by starting the

When the indoor temperature reaches the set temperature, the inverter compressor stops the operation, detects the indoor temperature through the indoor temperature sensor, judges the detected indoor temperature and restarts the operation of the inverter compressor at the set operating frequency. ,

Continuously detects the difference between the set temperature and the room temperature to start the step-by-step operation control, the part that can be in charge of the general compressor of the general heat pump and the remaining set temperature difference within the set condition range is operated by the part of the inverter compressor Characterized in that to control,

When the user sets 100% of the maximum difference between the set temperature and the room temperature,

It is to include selective and flexible control that can be applied variously according to the number by dividing the part in charge of general compressor and the part in charge of inverter compressor by each setting step by the difference of set temperature and room temperature. .

As another embodiment of the present invention, a control method of a plurality of tandem heat pumps using a single inverter according to the indoor load determination is as follows.

When one heat pump including an inverter compressor and n general heat pumps are operated in tandem, the indoor load is determined during initial operation, the indoor load is set to the stepwise operating frequency, and the operation of the inverter compressor is started. When the set indoor load is reached, the inverter compressor stops operation, detects the indoor load through the indoor temperature sensing unit, judges the detected indoor load, and restarts the operation of the inverter compressor at the set operating frequency. In addition, the interior load is continuously sensed by starting the step-by-step operation control, the part that can be in charge of the general compressor within the set condition range and the rest of the indoor load is characterized in that the operation control to the part that is in charge of the inverter compressor, When the user sets the indoor load to 100%, the general compressor loads each set load level. By separating the part from the rest of the load part which is responsible to the inverter compressor, it is to include those comprising a selective and flexible control is possible in several different ways, depending on the number of.

When three heat pumps are operated in tandem by the control method of two tandem heat pump systems including one inverter control according to the indoor temperature determination according to the present invention;

Determines the set temperature during initial operation, sets the difference between the set temperature and the room temperature as the step frequency, and starts the operation of the inverter compressor. When the indoor temperature reaches the set temperature, the inverter compressor stops operation and detects the indoor temperature through the indoor temperature sensor. Determines the detected room temperature and restarts the operation of the inverter compressor at the set operating frequency. Continuously detects the difference between the set temperature and the room temperature and starts the step-by-step operation control to divide the part which can be in charge of the general compressor within the set condition range and the remaining set temperature difference into the part which is in charge of the inverter compressor. According to the state of the pump, integrated system control including control of the flow rate of each part and the flow rate of the FCU in the room is performed.In general, each part of the setting step is divided into the part in charge of the general compressor and the part in charge of the remaining load ratio by the inverter compressor. In addition, the control includes inverter control, which enables selective and flexible control according to the number of units, to prevent unnecessary power consumption and damage to the compressor.

In addition, as a control method of a plurality of tandem type heat pump systems including one inverter control according to load determination, when three heat pumps are operated in tandem, the set temperature is determined during initial operation, and the indoor temperature reaches the set temperature. Inverter compressor stops running, restarts inverter compressor after 3-5 minutes, detects load in the indoor load detection unit, judges the detected indoor load and operates the inverter compressor at the set operating frequency and changes load. According to the condition set by the user, the part that can be in charge of the general compressor and the part that is in charge of the inverter compressor are divided into parts that are in charge of the inverter compressor, and according to the state of the controlled heat pump, Integrate system control including air volume control, and overall compressor part and the rest for each setting stage. It is divided into the part which takes charge rate into inverter compressor, and it is possible to respond quickly to the load fluctuation by providing smart operation control including inverter control that can be selectively and fluidly controlled according to the number of units. It can be implemented, and it is expected to secure the life of the compressor and the stability of the cycle by preventing excessive or inefficient operation of the compressor.

Hereinafter, a description of a specific embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a control method of a plurality of tandem heat pumps using a single inverter according to the room temperature and load determination according to the first and second embodiments of the present invention, Figure 2 is a first embodiment of the present invention 3 is a flowchart illustrating a method of controlling a plurality of tandem heat pumps using a single inverter according to an indoor temperature determination, and FIG. 3 is a method of controlling a plurality of tandem heat pumps using a single inverter according to an indoor load determination according to a second embodiment of the present invention. Is a flow chart.

As shown in FIG. 1, the overall configuration diagram of a control method of a plurality of tandem type heat pump systems including one inverter control according to a room temperature and a load determination is a heat pump 21 including one inverter compressor. When the heat pump 21 including a plurality of general compressors is operated in a tandem type, the inverter compressor controls the rotation speed according to the operation frequency setting, and the general compressor performs the operation control by the ON-OFF control. According to the state of the controlled heat pump 21, the flow rate of each part supplies the appropriate flow rate corresponding to the state of each stage of the heat pump 21, and the FCU of the room rotates according to the state of the heat pump of each stage. Air volume control 22 is performed through water control.

The integrated system control including the flow rate and the FCU's air volume control (22) enables the control including the inverter control, which enables selective and fluid control, and enables quick response according to the room temperature and load fluctuations. Do. This control is the overall operation control through the control unit 23, it is possible to detect and manage in real time through the continuous monitoring (24).

As shown in FIG. 2, the smart operation control method of a plurality of tandem type heat pump systems including one inverter control according to the indoor temperature determination is performed after operation standby when three heat pumps are operated in tandem. In setting (1), input the set temperature (a), set the operating frequency step by step (2) between the set temperature (a) and the room temperature (b), determine the operating frequency (3) of the inverter compressor Start operation (4). After the indoor temperature reaches the set temperature (5), the inverter compressor restarts operation after 3 to 5 minutes after stopping (6) The indoor temperature sensor detects the indoor temperature (7) to detect the indoor temperature, When the detected indoor temperature is determined and the maximum temperature of the difference between the set temperature and the indoor temperature set by the user is 100% and the heat pump capacity is 60RT, the operation method according to the set temperature and the indoor temperature difference ratio for each step is as follows. Is the same as

When the difference between the first set temperature and the room temperature is 30% (18RT) (8), operating the inverter compressor at 90%;

When the difference between the two-stage set temperature and the room temperature is 50% (30RT) (10), out of 50% (30RT) of the total temperature difference, 33.33% (20RT) operates one general compressor at 100%, and the remaining 16.67% ( 10RT) operates the inverter compressor at 50% (11);

When the difference between the three-stage set temperature and the room temperature is 70% (42RT) (12), 66.66% (40RT) of the total temperature difference 70% (42RT) operates the normal compressors 1 and 2 at 100%, and the remaining 3.34% (2RT) driving the inverter compressor at 10% (13);

Step 4 When the difference between the set temperature and the room temperature is 100% (60RT) (14), the inverter compressor and general compressors 1 and 2 are operated at 100% (15). According to the state of the heat pump in stages, the appropriate flow rate is supplied as appropriate, and the FCU in the room performs the air volume control through the rotation speed control in accordance with the state of the heat pump in each stage.

Even after the four-stage condition, the inverter compressor 21 and the plurality of general compressors 21 are continuously sensed and operated in the condition range set by the user according to the difference between the set temperature and the room temperature, and flowed to each part. The present invention relates to a control method including inverter control capable of selective and fluid control through integrated system control including flow rate and air volume control of FCU in a room.

In spite of rapid temperature change, it is possible to respond quickly and easily by operating within the set maximum operating frequency due to the difference between the set temperature and the room temperature, rather than the frequent on / off method of the existing compressor, so it is possible to respond quickly and pleasantly. It can reduce the unnecessary power consumption by preventing excessive operation of the compressor or inefficient operation.

As shown in FIG. 3, the control method of a plurality of tandem type heat pump systems including one inverter control according to the indoor load determination according to the present invention is operated after waiting for operation when three heat pumps are operated in tandem. In step 101, the indoor load is set step by step (102), the operation frequency is determined 103 according to the load, and the operation of the inverter compressor is started (104). After the room temperature reaches the set temperature (105), the inverter compressor stops, and restarts operation after 3 to 5 minutes (106). When the indoor load detection unit detects the indoor load (107) and detects the indoor load, and judges the detected indoor load and the indoor load set by the user is up to 100%, and the heat pump capacity is 60RT in total, each step The operating method according to the indoor load is as follows.

When the first stage indoor load is 30% (18RT) (108), operating the inverter compressor at 90% (109);

When the second stage indoor load is 50% (30RT) (110), 33.33% (20RT) of the total temperature difference 50% (30RT) operates one general compressor at 100%, and the remaining 16.67% (10RT) is the inverter compressor. Driving 111 at 50%;

When the third stage indoor load is 70% (42RT) (112), 66.66% (40RT) of the total temperature difference 70% (42RT) operates the normal compressors 1 and 2 at 100%, and the remaining 3.34% (2RT) is the inverter. Operating the compressor at 10% (113);

When the fourth stage indoor load is 100% (60RT) (114), the inverter compressor and general compressors 1 and 2 are operated at 100% (115). As a result, the appropriate flow rate is supplied, and the FCU in the room performs the airflow control through the rotation speed control according to the heat pump state of each stage.

Incorporation of the flow rate of the FCU in the room and the flow rate of each unit that continuously detects and operates the inverter compressor and multiple general compressors according to the indoor load step by step according to the indoor load even after the four-stage conditions. Smart operation control method that includes inverter control that enables selective and fluid control through selective system control enables quick response in case of sudden load, enabling comfortable cooling and heating, and preventing excessive or inefficient operation of the compressor. The life of the compressor can be extended and the cycle stability can be secured.

In general, each setting stage is divided into the part in charge of the general compressor and the part in charge of the remaining load ratio to the inverter compressor. The load ratio of each stage is an application rate for three compressors, and the application rate can be variously applied according to the number of units.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many various obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include examples of many such variations.

21: heat pump 22: air flow control of the FCU
23: control unit 24: monitoring

Claims (8)

When 1 heat pump and n general heat pumps including inverter compressor are operated in tandem, the set temperature is determined during initial operation, and the difference between the set temperature and the room temperature is set by the step frequency and the inverter compressor is operated. Control method of a plurality of tandem heat pump using a single inverter, characterized in that to start.
The method of claim 1,
When the indoor temperature reaches the set temperature, the inverter compressor stops operation, detects the indoor temperature through the indoor temperature sensor, and determines the detected indoor temperature to restart the operation of the inverter compressor at the set operating frequency. Control method of multiple tandem heat pumps using a single inverter.
3. The method of claim 2,
Continuously detects the difference between the set temperature and the room temperature to start the step-by-step operation control to operate the part which can be in charge of the general compressor of the general heat pump and the remaining set temperature difference within the condition range set by the inverter compressor. Control method of a plurality of tandem heat pump using a single inverter characterized in that the control.
When one heat pump including an inverter compressor and n general heat pumps are operated in tandem, the indoor load is determined during initial operation, the indoor load is set to the stepwise operating frequency, and the operation of the inverter compressor is started. Control method of a plurality of tandem heat pump using a single inverter.
5. The method of claim 4,
When the inverter reaches the set indoor load, the inverter compressor stops operation, detects the indoor load through the indoor temperature sensing unit, judges the detected indoor load, and restarts the operation of the inverter compressor at the set operating frequency. Control method of multiple tandem heat pumps used.
6. The method of claim 5,
A single inverter characterized by continuously detecting the indoor load to start the step-by-step operation control and the operation control to the part that can be in charge of the general compressor and the rest of the indoor load is the part that is in charge of the inverter compressor within the set condition range Control method of a plurality of tandem heat pump using.
When the user sets 100% of the maximum difference between the set temperature and the room temperature,
It is to include selective and flexible control that can be applied variously according to the number by dividing the part in charge of the general compressor and the part in charge of the inverter compressor for each setting step by the difference of the set temperature and the room temperature. A method of controlling a plurality of tandem heat pumps using a single inverter.
When the user sets the indoor load to 100%,
Each set load stage is divided into the part that is in charge of the general compressor and the part that is in charge of the inverter compressor, and a plurality of using a single inverter characterized in that it includes a selective and flexible control that can be applied variously according to the number For controlling two tandem heat pumps.
KR1020120084291A 2012-08-01 2012-08-01 Control method of multiple tandem type heat pump system with a single inverter KR20140017780A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110057137A (en) * 2019-03-05 2019-07-26 青岛经济技术开发区海尔热水器有限公司 A kind of heat pump system of multi-machine parallel connection
CN115451600A (en) * 2022-09-21 2022-12-09 孚莱美科(江苏)环境科技有限公司 Combined air-cooled modular unit and energy regulation and control method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110057137A (en) * 2019-03-05 2019-07-26 青岛经济技术开发区海尔热水器有限公司 A kind of heat pump system of multi-machine parallel connection
CN115451600A (en) * 2022-09-21 2022-12-09 孚莱美科(江苏)环境科技有限公司 Combined air-cooled modular unit and energy regulation and control method thereof
CN115451600B (en) * 2022-09-21 2024-01-23 孚莱美科(江苏)环境科技有限公司 Combined air-cooled module unit and energy control method thereof

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