CN110608495A - Multi-adjustment-mode integrated air conditioning system and working method thereof - Google Patents
Multi-adjustment-mode integrated air conditioning system and working method thereof Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
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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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a multi-regulation mode integrated air conditioning system and a working method thereof, and belongs to the field of air conditioning systems. The air conditioning system includes: the system comprises a heat pump circulating module, a radiation module, a fan coil module, a fresh air module and a control module; the heat pump circulating module comprises a heat pump unit, a cold and hot water circulating pump, a ball valve and an electric three-way valve; the heat pump unit is respectively connected with the radiation module, the fan coil module and the fresh air module through pipelines; the controller is connected with the heat pump circulation module, the radiation module, the fan coil module and the fresh air module through leads to dynamically adjust the indoor temperature and humidity and the air quality; the invention realizes the control of the air temperature, humidity and air quality of the environment by combining the radiation heat exchange and the convection heat exchange and by assisting corresponding control measures, and compared with the traditional air-conditioning system, the invention has the advantages of energy conservation, environmental protection, better indoor environment comfort and air quality.
Description
Technical Field
The invention relates to the field of air conditioning systems, in particular to a multi-regulation integrated air conditioning system and a working method thereof.
Background
Due to the shortage of petrochemical energy sources, the price of natural gas is gradually increased, so that electric energy is a common heat source for building heating. Among all electric heating apparatuses, a heat pump system is currently recognized as the most energy-saving and environment-friendly product. Because the radiation heating has low requirement on water temperature, the heat pump is used as a heat source and matched with the radiation tail end to form an optimal heating system. In order to maximize the performance of the radiant heating equipment, besides heating in winter, part of indoor cooling load can be borne in the cooling season in summer through reasonable design and control, so that the cost performance of the heating equipment can be improved, the structural size of an air supply tail end can be reduced, the operation noise is reduced, and the equipment cost of the whole set of air conditioning system is reduced. Therefore, the radiant heating terminal is free from the heating terminal in the traditional concept and is upgraded to a temperature adjusting terminal for both winter and summer.
In order to improve the indoor air quality of residential buildings, the urban and rural construction department of housing in China publishes an industrial standard of 'residential fresh air system technical standard' in 2018 and 12 months, the number of the industrial standard is JGJ/T440-2018, and the industrial standard is required to be implemented from 2019 and 5 and 1 months. The standard specifies that a fresh air system should be provided when the natural ventilation of the residence cannot meet the ventilation requirements or does not have the natural ventilation conditions. Most of the existing air conditioning systems for houses in China are designed on the basis of meeting the requirements of heating and refrigeration, and the requirement of fresh air is rarely considered, so that the indoor air quality is poor during the operation of the air conditioner. Therefore, an integrated air conditioning system with various requirements of heating, refrigeration and fresh air comprehensively considered is required to meet social requirements.
In the prior art, the utility model with publication number CN205037400U provides a cooling and heating system based on an air-cooled heat pump. The method comprises the following steps: an air-cooled heat pump, a fan coil system and a radiant panel radiant system. The fan coil and the radiation plate are integrated together in a radiation mode to achieve refrigeration and heating, the radiation plate is used for heating, the fan coil is used for refrigeration, the floor heating and the fan coil independently operate according to seasons, a fresh air system is not considered, and indoor air quality is poor. This patent system can realize heating and sharing end equipment when refrigerating, improves system economy nature to satisfy the new trend demand.
Disclosure of Invention
The invention aims to provide an air conditioning system which is comfortable, energy-saving and high in integration level and can realize heating, cooling and fresh air supply so as to solve the problems and the defects of the existing air conditioning system.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an integrated air conditioning system of many regulative modes, includes five parts of heat pump cycle module, radiation module, fan coil pipe module, new trend module, control module, wherein, heat pump cycle module includes: the water outlet of the heat pump unit is connected with the inlet of the first ball valve through a pipeline, the outlet of the first ball valve is connected with the end a of the first electric three-way valve through a pipeline, the water inlet of the heat pump unit is connected with the outlet of the first hot and cold water circulating pump through a pipeline, and the inlet of the first hot and cold water circulating pump is connected with the outlet of the second ball valve through a pipeline; the radiation module includes: the system comprises a first electric three-way valve, a first cold and hot water circulating pump, a first ball valve and a radiation pipe network, wherein the end a of the first electric three-way valve is connected with the end c of the first electric three-way valve through a pipeline; the fan coil module includes: the water inlet of the fan coil is connected with the end b of the first electric three-way valve through a pipeline, the water outlet of the fan coil is connected with the inlet of the fifth ball valve through a pipeline, and the outlet of the fifth ball valve is connected with the inlet of the second ball valve through a pipeline; the new trend module includes: the air conditioner comprises an air supply outlet, an air exhaust outlet, a sixth ball valve, a fresh air processor, a first electric air valve and a second electric air valve, wherein an indoor side air outlet of the fresh air processor is connected with an inlet of the first electric air valve through an air pipe, an outlet of the first electric air valve is connected with an inlet of the air supply outlet through an air pipe, an indoor side air inlet of the fresh air processor is connected with an outlet of the second electric air valve through an air pipe, an inlet of the second electric air valve is connected with an outlet of the air exhaust outlet through an air pipe, a water inlet of an internal heat exchanger of the fresh air processor is connected with an outlet of the sixth ball valve through a pipeline, an inlet of the sixth ball valve is connected with a b end of the first electric three-way valve through a pipeline, and a water outlet of the internal heat exchanger of the fresh air processor is connected with an; the control module includes: the system comprises a system controller and an indoor controller, wherein a control end of the system controller is respectively connected with a controller of the heat pump unit, a control end of the first electric three-way valve, a control end of the second electric three-way valve, a controller of the fan coil, the first electric air valve and a controller of the second electric air valve through leads, and a receiving end of the system controller is respectively connected with a control end of the indoor controller, an indoor temperature sensor, a humidity sensor and a carbon dioxide sensor through leads.
Further, the heat pump unit is a frequency conversion unit and can be an air source, a soil source or a water source.
Further, the first electric three-way valve and the second electric three-way valve are both proportional control valves.
Further, the first electric three-way valve is a flow dividing three-way valve, and the second electric three-way valve is a flow converging three-way valve.
Further, a temperature sensor is arranged between the end c of the second electric three-way valve and an inlet of the second cold and hot water circulating pump, and a temperature sensor, a humidity sensor and a carbon dioxide sensor are arranged at the air outlet.
Furthermore, the pipeline of the radiation pipe network is a capillary network or a plastic pipe or an aluminum-plastic composite pipe described in the technical code of radiation heating and cooling.
Further, the motor of the fan coil is a brushless direct current motor.
Further, the second cold and hot water circulating pump is a fixed-lift variable-flow water pump.
Furthermore, the tail end of the fresh air module is in the form of floor air supply and exhaust or ceiling air supply and exhaust.
Further, the radiation pipe network can be an integration of the radiation ends connected in parallel with multiple rooms and the water dividing and collecting device.
Further, an air dew point calculation program is embedded in the system controller.
The working method of the multi-regulation mode integrated air conditioning system is divided into the following three working modes according to the operation purpose:
(1) heating mode
Operation of independent radiation pipe network
When the single radiant heating is operated, the fifth ball valve and the sixth ball valve are in a normally closed state, the first cold and hot water circulating pump and the second cold and hot water circulating pump, the first ball valve, the second ball valve, the third ball valve, the fourth ball valve and the ends a and c of the first electric three-way valve are in an open state, the ends a and c of the second electric three-way valve are in a heating operation state, and hot water flows into the radiant pipe network for radiant heating after sequentially passing through the first ball valve, the ends a and c of the first electric three-way valve, the ends a and c of the second electric three-way valve, the second cold and hot water circulating pump and the third ball valve; when the indoor temperature reaches a certain temperature above a design value (for example, the temperature difference between the indoor temperature and the design value is set to be 4 ℃), the heat pump unit stops running, the first cold and hot water circulating pump is in a closed state, the a end and the b end of the second electric three-way valve are in a closed state, the return water of the radiation pipe network sequentially flows through the fourth ball valve, and the b end and the c end of the second electric three-way valve, the second cold and hot water circulating pump and the third ball valve realize self-circulation; when the indoor temperature is lower than a designed value by a certain temperature (for example, the temperature difference between the indoor temperature and the designed value is set to be 4 ℃), the end a of the second electric three-way valve is opened according to a certain proportion (for example, 10%), the first cold and hot water circulating pump is in an open state, and the heat pump unit operates again, so that circulation is performed;
② the fan coil and the radiant tube network run together
During heating operation, (1) after the mode operates alone for a certain time (for example, 30 minutes), if the indoor temperature change is small (for example, less than 2 ℃), the system controller controls the end b of the first electric three-way valve to be opened, the fifth ball valve is in an open state, and hot water enters the fan coil through the end b of the first electric three-way valve to assist in heating;
(2) refrigeration dehumidification mode
Running of single fan coil
When the refrigeration operation is carried out, the first ball valve, the ends a and b of the first electric three-way valve, the first cold and hot water circulating pump, the second ball valve and the fifth ball valve are in an open state, the heat pump unit starts to carry out refrigeration working condition operation, cold water enters the fan coil pipe through the first ball valve, the ends a and b of the first electric three-way valve, and flows back to the heat pump unit through the fifth ball valve, the second ball valve and the first cold and hot water circulating pump in sequence after indoor heat and humidity load is eliminated, and the operation is circulated;
② the fan coil and the radiant tube network run together
When the fan coil operates in the (2) mode during cooling operation until the dew point of indoor air is reduced to a certain limit value (for example, 16 ℃), the end c of the first electric three-way valve, the ends b and c of the second electric three-way valve, the second cold and hot water circulating pump, the third ball valve and the fourth ball valve are in an open state, and cold water in the radiation pipe network is subjected to self-circulation; after a certain time (for example, 10 minutes), the a end of the second electric three-way valve is opened according to a certain proportion (for example, 10 percent); when the water supply temperature of the radiation pipe network is reduced to a certain limit value (such as 18 ℃), the end a of the second electric three-way valve is closed; when the water supply temperature of the radiant pipe network rises to a certain limit value (such as 21 ℃), the a end of the second electric three-way valve is opened again, and the process is repeated.
(3) Fresh air mode
Fresh air
When the concentration of the indoor carbon dioxide exceeds a design value and the natural ventilation condition is limited, an air conditioning system is required to provide fresh air; the heat pump unit is in a shutdown state, the system controller controls the first electric air valve and the second electric air valve to be in an open state after receiving signals from an indoor carbon dioxide concentration sensor, a fan in the fresh air processor operates, outdoor fresh air enters the fresh air processor after being filtered, and is subjected to sensible heat exchange with exhaust air and then is sent into a room through a fresh air pipeline and the air supply outlet; indoor air enters the fresh air processor through the air outlet and the air exhaust pipe, and is exhausted outdoors after sensible heat exchange with the introduced fresh air;
② heating by fresh air
During the operation of a heating mode, when the system controller receives a signal that the concentration of indoor carbon dioxide exceeds a set value, the system controller controls the first electric air valve and the sixth ball valve to be opened, and on the basis of the operation mode of the first air treatment machine in the step (3), fresh air and hot water are sent into a room through a fresh air pipeline and the air supply opening after fully exchanging heat in the fresh air treatment machine;
③ fresh air cooling and dehumidifying
And (3) during the operation of a refrigeration and dehumidification mode, when the system controller receives a signal that the concentration of indoor carbon dioxide exceeds a set value, the system controller controls the first electric air valve and the sixth ball valve to be opened, and on the basis of the operation mode of the first step (3), fresh air and cold water are sent into the room through a fresh air pipeline and the air supply outlet after fully exchanging heat in the fresh air processor.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the heat pump unit is used as a cold and heat source, the summer radiation pipe network is used for assisting cooling, and the winter radiation pipe network is used for radiation heating, so that discomfort caused by strong blowing feeling of the traditional air conditioning system is avoided; under the same cold and heat feeling, the system can reduce the temperature feeling of residents by 1-2 ℃, so that the indoor design temperature in summer can be increased, the indoor design temperature in winter can be reduced, the load is reduced, and the system has an energy-saving effect.
2. Compared with the traditional air conditioning system, the invention can reduce the type of the fan coil and reduce the indoor noise during operation.
3. The fresh air supply mode can supply air for the floor or the ceiling, so that the indoor air quality can be improved, and the comfort of personnel is improved.
4. The invention controls the running state of the system according to the operation requirement and the indoor carbon dioxide concentration condition, and achieves the designed thermal comfort state and air quality.
Drawings
FIG. 1 is a schematic diagram of an integrated air conditioning system integrating heating, cooling and independent fresh air;
in the figure: 1. is a heat pump circulating module: 1-1, a heat pump unit, 1-2, a first ball valve, 1-3, a first electric three-way valve, 1-4, a first cold and hot water circulating pump, 1-5 and a second ball valve; 2. for the radiation module: 2-1, a second electric three-way valve, 2-2, a second cold and hot water circulating pump, 2-3, a third ball valve, 2-5, a radiation pipe network and 2-4, a fourth ball valve; 3. for the fan coil module: 3-1 is a fifth ball valve, and 3-2 is a fan coil; 4. for the new trend module: 4-1, an air supply outlet, 4-2, an air exhaust outlet, 4-3, a sixth ball valve, 4-4, a fresh air processor, 4-5, a first electric air valve and 4-6, a second electric air valve; 5. the control module is as follows: 5-1 is a system controller, and 5-2 is an indoor controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description is made with reference to the accompanying drawings and embodiments.
As shown in fig. 1, the multi-adjustment integrated air conditioning system includes five parts, namely a heat pump cycle module 1, a radiation module 2, a fan coil module 3, a fresh air module 4, and a control module 5, wherein the heat pump cycle module 1 includes: the system comprises a heat pump unit 1-1, a first ball valve 1-2, a first electric three-way valve 1-3, a first cold and hot water circulating pump 1-4 and a second ball valve 1-5, wherein a water outlet of the heat pump unit 1-1 is connected with an inlet of the first ball valve 1-2 through a pipeline, an outlet of the first ball valve 1-2 is connected with an a end of the first electric three-way valve 1-3 through a pipeline, a water inlet of the heat pump unit 1-1 is connected with an outlet of the first cold and hot water circulating pump 1-4 through a pipeline, and an inlet of the first cold and hot water circulating pump 1-4 is connected with an outlet of the second ball valve 1-5 through a; the radiation module 2 includes: the system comprises a second electric three-way valve 2-1, a second cold and hot water circulating pump 2-2, a third ball valve 2-3, a fourth ball valve 2-4 and a radiation pipe network 2-5, wherein the end a of the second electric three-way valve 2-1 is connected with the end c of the first electric three-way valve 1-3 through a pipeline, the end b of the second electric three-way valve 2-1 is connected with the outlet of the fourth ball valve 2-4 through a pipeline, the end c of the second electric three-way valve 2-1 is connected with the inlet of the second cold and hot water circulating pump 2-2 through a pipeline, the outlet of the second cold and hot water circulating pump 2-2 is connected with the inlet of the third ball valve 2-3 through a pipeline, and the outlet of the third ball valve 2-3 is connected with the inlet of the radiation pipe network 2-5 through a; the fan coil module 3 includes: the water inlet of the fan coil 3-2 is connected with the b end of the first electric three-way valve 1-3 through a pipeline, the water outlet of the fan coil 3-2 is connected with the inlet of the fifth ball valve 3-1 through a pipeline, and the outlet of the fifth ball valve 3-1 is connected with the inlet of the second ball valve 1-5 through a pipeline; the fresh air module 4 includes: an air supply outlet 4-1, an air exhaust outlet 4-2, a sixth ball valve 4-3, a fresh air processor 4-4, a first electric air valve 4-5 and a second electric air valve 4-6, wherein an indoor side air outlet of the fresh air processor 4-4 is connected with an inlet of the first electric air valve 4-5 through an air pipe, an outlet of the first electric air valve 4-5 is connected with an inlet of the air supply outlet 4-1 through an air pipe, an indoor side air inlet of the fresh air processor 4-4 is connected with an outlet of the second electric air valve 4-6 through an air pipe, an inlet of the second electric air valve 4-6 is connected with an outlet of the air exhaust outlet 4-2 through an air pipe, a water inlet of an internal heat exchanger of the fresh air processor 4-4 is connected with an outlet of the sixth ball valve 4-3 through a pipeline, an inlet of the sixth ball valve 4-3 is connected with the b end of the first electric three-way valve 1-3 through a pipeline, and a water outlet of an internal heat exchanger of the fresh air processor 4-4 is connected with an inlet of the second ball valve 1-5 through a pipeline; the control module 5 comprises: the system comprises a system controller 5-1 and an indoor controller 5-2, wherein a control end of the system controller 5-1 is respectively connected with a controller of the heat pump unit 1-1, a control end of the first electric three-way valve 1-3, a control end of the second electric three-way valve 2-1, a controller of the fan coil 3-2, a controller of the first electric air valve 4-5 and a controller of the second electric air valve 4-6 through leads, and a receiving end of the system controller 5-1 is respectively connected with a control end of the indoor controller 5-2, an indoor temperature sensor, a humidity sensor and a carbon dioxide sensor through leads.
The heat pump unit 1-1 is a frequency conversion unit and can be an air source, a soil source or a water source. The first electric three-way valve 1-3 and the second electric three-way valve 2-1 are proportional control valves. The first electric three-way valve 1-3 is a flow-dividing three-way valve, and the second electric three-way valve 2-1 is a flow-converging three-way valve. A temperature sensor is arranged between the end c of the second electric three-way valve 2-1 and the inlet of the second cold and hot water circulating pump 2-2, and a temperature sensor, a humidity sensor and a carbon dioxide sensor are arranged at the air outlet 4-2. The radiant tube in the radiant module 2 is a capillary network or a plastic tube or an aluminum-plastic composite tube described in the technical code of radiant heating and cooling. And a motor of a fan coil 3-2 in the fan coil module 3 is a direct current brushless motor. The second cold and hot water circulating pump 2-2 is a fixed-lift variable-flow water pump. The tail end of the fresh air module 4 is in the form of floor air supply and exhaust or ceiling air supply and exhaust. The radiant pipe network 2-5 may be an integration of a multi-room parallel radiant end with a water collector. An air dew point calculation program is embedded in the system controller 5-1.
The working method of the multi-regulation mode integrated air conditioning system is divided into the following three working modes according to the operation purpose:
(1) heating mode
Operation of independent radiation pipe network
When the single radiant heating operation is performed, the fifth ball valve 3-1 and the sixth ball valve 4-3 are in a normally closed state, the first cold and hot water circulating pump 1-4 and the second cold and hot water circulating pump 2-2, the first ball valve 1-2, the second ball valve 1-5, the third ball valve 2-3, the fourth ball valve 2-4 and the ends a and c of the first electric three-way valve 1-3, the ends a and c of the second electric three-way valve 2-1 are in an open state, the heat pump unit 1-1 is in a heating operation state, and hot water sequentially flows into the radiant pipe network 2-5 through the first ball valve 1-2, the ends a and c of the first electric three-way valve 1-3, the ends a and c of the second electric three-way valve 2-1, the second cold and hot water circulating pump 2-2 and the third ball valve 2-3 to perform radiant heating operation Heating; when the indoor temperature reaches a certain temperature above a design value (for example, the temperature difference between the indoor temperature and the design value is set to be 4 ℃), the heat pump unit 1-1 stops running, the first cold and hot water circulating pump 1-4 is in a closed state, the a end of the second electric three-way valve 2-1 is in a closed state, the b end of the second electric three-way valve is in an open state, the return water of the radiation pipe network 2-5 sequentially flows through the fourth ball valve 2-4, and the b end and the c end of the second electric three-way valve 2-1, the second cold and hot water circulating pump 2-2 and the third ball valve 2-3 realize self-circulation; when the indoor temperature is lower than a designed value and a certain temperature (for example, the temperature difference between the indoor temperature and the designed value is set to be 4 ℃), the end a of the second electric three-way valve 2-1 is opened according to a certain proportion (for example, 10%), the first cold and hot water circulating pump 1-4 is in an opened state, and the heat pump unit 1-1 operates again, so that circulation is performed;
② the fan coil and the radiant tube network run together
During heating operation, (1) after the mode operates alone for a certain time (for example, 30 minutes), if the indoor temperature change is small (for example, less than 2 ℃), the system controller 5-1 controls the end b of the first electric three-way valve 1-3 to be opened, the fifth ball valve 3-1 is in an open state, and hot water enters the fan coil 3-2 through the end b of the first electric three-way valve 1-3 to assist in heating;
(2) refrigeration dehumidification mode
Running of single fan coil
When in refrigerating operation, the first ball valve 1-2, the ends a and b of the first electric three-way valve 1-3, the first cold and hot water circulating pump 1-4, the second ball valve 1-5 and the fifth ball valve 3-1 are in an open state, the heat pump unit 1-1 starts to operate in a refrigerating working condition, cold water enters the fan coil 3-2 through the first ball valve 1-2 and the ends a and b of the first electric three-way valve 1-3, and flows back to the heat pump unit 1-1 through the fifth ball valve 3-1, the second ball valve 1-5 and the first cold and hot water circulating pump 1-4 in sequence after indoor heat and humidity loads are eliminated, and the operation is circulated in this way;
② the fan coil and the radiant tube network run together
When the fan coil 3-2 operates in the (2) mode during cooling operation until the dew point of indoor air drops to a certain limit value (for example, 16 ℃), wherein the end c of the first electric three-way valve 1-3, the ends b and c of the second electric three-way valve 2-1, the second cold and hot water circulating pump 2-2, the third ball valve 2-3 and the fourth ball valve 2-4 are in an open state, and cold water in the radiation pipe network 2-5 is subjected to self-circulation; after a certain time (for example, 10 minutes), the a end of the second electric three-way valve 2-1 is opened according to a certain proportion (for example, 10%); when the water supply temperature of the radiant pipe network 2-5 is reduced to a certain limit value (such as 18 ℃), the end a of the second electric three-way valve 2-1 is closed; when the temperature of the water supplied by the radiant pipe network 2-5 rises to a certain limit value (such as 21 ℃), the end a of the second electric three-way valve 2-1 is opened again, and the process is circulated;
(3) fresh air mode
Fresh air
When the concentration of the indoor carbon dioxide exceeds a design value and the natural ventilation condition is limited, an air conditioning system is required to provide fresh air; the heat pump unit 1-1 is in a shutdown state, the system controller 5-1 receives signals from an indoor carbon dioxide concentration sensor and then controls the first electric air valve 4-5 and the second electric air valve 4-6 to be in an open state, a fan in the fresh air processor 4-4 operates, outdoor fresh air is filtered and enters the fresh air processor 4-4, and the fresh air enters the fresh air processor 4-4 to exchange sensible heat with exhaust air and then is sent into a room through a fresh air pipeline and the air supply outlet 4-1; indoor air enters the fresh air processor 4-4 through the air outlet 4-2 and the air exhaust pipe, and is discharged to the outside after sensible heat exchange with introduced fresh air;
② heating by fresh air
During the operation of a heating mode, when the system controller 5-1 receives a signal that the concentration of indoor carbon dioxide exceeds a set value, the first electric air valve 4-5 and the sixth ball valve 4-3 are controlled to be opened, and on the basis of the operation mode of the (3) first, fresh air and hot water are sent into a room through a fresh air pipeline and the air supply opening 4-1 after fully exchanging heat in the fresh air processor 4-4;
③ fresh air cooling and dehumidifying
During the operation of a refrigeration and dehumidification mode, when the system controller 5-1 receives a signal that the concentration of indoor carbon dioxide exceeds a set value, the first electric air valve 4-5 and the sixth ball valve 4-3 are controlled to be opened, and on the basis of the operation mode of the (3) first step, fresh air and cold water are sent into a room through a fresh air pipeline and the air supply opening 4-1 after fully exchanging heat in the fresh air processor 4-4.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. All changes, modifications and equivalents coming within the spirit and terms of the invention are intended to be protected by the following claims.
Claims (9)
1. The utility model provides an integrated air conditioning system of many regulation modes, its characterized in that includes five parts of heat pump cycle module (1), radiation module (2), fan coil module (3), new trend module (4) and control module (5), wherein, heat pump cycle module (1) includes: the heat pump unit comprises a heat pump unit (1-1), a first ball valve (1-2), a first electric three-way valve (1-3), a first cold and hot water circulating pump (1-4) and a second ball valve (1-5), wherein a water outlet of the heat pump unit (1-1) is connected with an inlet of the first ball valve (1-2) through a pipeline, an outlet of the first ball valve (1-2) is connected with an a end of the first electric three-way valve (1-3) through a pipeline, a water inlet of the heat pump unit (1-1) is connected with an outlet of the first cold and hot water circulating pump (1-4) through a pipeline, and an inlet of the first cold and hot water circulating pump (1-4) is connected with an outlet of the second ball valve (1-5); the radiation module (2) comprises: a second electric three-way valve (2-1), a second cold and hot water circulating pump (2-2), a third ball valve (2-3), a fourth ball valve (2-4) and a radiant pipe network (2-5), the end a of the second electric three-way valve (2-1) is connected with the end c of the first electric three-way valve (1-3) through a pipeline, the end b of the second electric three-way valve (2-1) is connected with the outlet of the fourth ball valve (2-4) through a pipeline, the end c of the second electric three-way valve (2-1) is connected with the inlet of the second cold and hot water circulating pump (2-2) through a pipeline, the outlet of the second cold and hot water circulating pump (2-2) is connected with the inlet of the third ball valve (2-3) through a pipeline, the outlet of the third ball valve (2-3) is connected with the inlet of the radiant pipe network (2-5) through a pipeline; the fan coil module (3) comprises: the water inlet of the fan coil (3-2) is connected with the b end of the first electric three-way valve (1-3) through a pipeline, the water outlet of the fan coil (3-2) is connected with the inlet of the fifth ball valve (3-1) through a pipeline, and the outlet of the fifth ball valve (3-1) is connected with the inlet of the second ball valve (1-5) through a pipeline; the fresh air module (4) comprises: the air conditioner comprises an air supply outlet (4-1), an air exhaust outlet (4-2), a sixth ball valve (4-3), a fresh air processor (4-4), a first electric air valve (4-5) and a second electric air valve (4-6), wherein an indoor side air outlet of the fresh air processor (4-4) is connected with an inlet of the first electric air valve (4-5) through an air pipe, an outlet of the first electric air valve (4-5) is connected with an inlet of the air supply outlet (4-1) through an air pipe, an indoor side air inlet of the fresh air processor (4-4) is connected with an outlet of the second electric air valve (4-6) through an air pipe, an inlet of the second electric air valve (4-6) is connected with an outlet of the air exhaust outlet (4-2) through an air pipe, and a water inlet of an internal heat exchanger of the fresh air processor (4-4) is connected with the sixth ball valve (4-3) through a pipeline An inlet of the sixth ball valve (4-3) is connected with the end b of the first electric three-way valve (1-3) through a pipeline, and a water outlet of an internal heat exchanger of the fresh air processor (4-4) is connected with an inlet of the second ball valve (1-5) through a pipeline; the control module (5) comprises: the system comprises a system controller (5-1) and an indoor controller (5-2), wherein a control end of the system controller (5-1) is respectively connected with a controller of the heat pump unit (1-1), a control end of the first electric three-way valve (1-3), a control end of the second electric three-way valve (2-1), a controller of the fan coil (3-2), a controller of the first electric air valve (4-5) and a controller of the second electric air valve (4-6) through leads, and a receiving end of the system controller (5-1) is respectively connected with a control end of the indoor controller (5-2), an indoor temperature sensor, a humidity sensor and a carbon dioxide sensor through leads.
2. The integrated air conditioning system with multiple adjusting modes as claimed in claim 1, wherein: the heat pump unit (1-1) is a frequency converter of an air source, a soil source or a water source.
3. The integrated air conditioning system with multiple adjusting modes as claimed in claim 1, wherein: the first electric three-way valve (1-3) is a proportion regulating valve of a shunt tee; the second electric three-way valve (2-1) is a proportion regulating valve of a confluence tee.
4. The integrated air conditioning system with multiple adjusting modes as claimed in claim 1, wherein: a temperature sensor is arranged between the end c of the second electric three-way valve (2-1) and an inlet of the second cold and hot water circulating pump (2-2), and a temperature sensor, a humidity sensor and a carbon dioxide sensor are arranged at the air outlet (4-2).
5. The integrated air conditioning system with multiple adjusting modes as claimed in claim 1, wherein: the pipelines of the radiant pipe network (2-5) are capillary networks or plastic pipes or aluminum-plastic composite pipes described in the technical code of radiant heating and cooling.
6. The integrated air conditioning system with multiple adjusting modes as claimed in claim 1, wherein: and the motor of the fan coil (3-2) is a direct current brushless motor.
7. The integrated air conditioning system with multiple adjusting modes as claimed in claim 1, wherein: the second cold and hot water circulating pump (2-2) is a fixed-lift variable-flow water pump.
8. The integrated air conditioning system with multiple adjusting modes as claimed in claim 1, wherein: the tail end of the fresh air module (4) is in the form of floor air supply and exhaust or ceiling air supply and exhaust.
9. A working method of a multi-regulation mode integrated air conditioning system is characterized in that: according to the operation purpose, the method is divided into the following three working modes:
(1) heating mode
Operation of independent radiation pipe network
When the single radiation heating operation is carried out, the fifth ball valve (3-1) and the sixth ball valve (4-3) are in a normally closed state, the first cold and hot water circulating pump (1-4) and the second cold and hot water circulating pump (2-2), the first ball valve (1-2), the second ball valve (1-5), the third ball valve (2-3), the fourth ball valve (2-4) and the ends a and c of the first electric three-way valve (1-3) are in an open state, the ends a and c of the second electric three-way valve (2-1) are in a heating operation state, hot water sequentially passes through the first ball valve (1-2), the ends a and c of the first electric three-way valve (1-3), the ends a and c of the second electric three-way valve (2-1), c, enabling the cold and hot water to flow into the radiant pipe network (2-5) for radiant heating after the second cold and hot water circulating pump (2-2) and the third ball valve (2-3); when the indoor temperature reaches a certain temperature above a design value, for example, the temperature difference between the indoor temperature and the design value is set to be 4 ℃, the heat pump unit (1-1) stops running, the first cold and hot water circulating pump (1-4) is in a closed state, the a end of the second electric three-way valve (2-1) is in a closed state, the b end of the second electric three-way valve is in an open state, the return water of the radiation pipe network (2-5) sequentially flows through the fourth ball valve (2-4), and the b end and the c end of the second electric three-way valve (2-1), the second cold and hot water circulating pump (2-2) and the third ball valve (2-3) realize self-circulation; when the indoor temperature is lower than a designed value and is a certain temperature, for example, the temperature difference between the indoor temperature and the designed value is set to be 4 ℃, the end a of the second electric three-way valve (2-1) is opened according to a certain proportion (for example, 10%), the first cold and hot water circulating pump (1-4) is in an open state, the heat pump unit (1-1) operates again, and the circulation is carried out;
② the fan coil and the radiant tube network run together
During heating operation, (1) after the mode operates alone for a certain time, such as 30 minutes, if the indoor temperature change is small, such as less than 2 ℃, the system controller (5-1) controls the end b of the first electric three-way valve (1-3) to be opened, the fifth ball valve (3-1) is in an open state, and hot water enters the fan coil (3-2) through the end b of the first electric three-way valve (1-3) to assist in heating;
(2) refrigeration dehumidification mode
Running of single fan coil
When in refrigerating operation, the first ball valve (1-2), the ends a and b of the first electric three-way valve (1-3), the first cold and hot water circulating pump (1-4), the second ball valve (1-5) and the fifth ball valve (3-1) are in an open state, the heat pump unit (1-1) starts to operate in a refrigerating working condition, cold water enters the fan coil (3-2) through the ends a and b of the first ball valve (1-2) and the first electric three-way valve (1-3), and flows back to the heat pump unit (1-1) through the fifth ball valve (3-1), the second ball valve (1-5) and the first cold and hot water circulating pump (1-4) in sequence after indoor heat and humidity loads are eliminated, and the operation is circulated in this way;
② the fan coil and the radiant tube network run together
When the fan coil (3-2) is operated in the mode (2) until the dew point of indoor air is reduced to a certain limit value, such as 16 ℃, when the fan coil is operated in the cooling operation, the end c of the first electric three-way valve (1-3), the ends b and c of the second electric three-way valve (2-1), the second cold and hot water circulating pump (2-2), the third ball valve (2-3) and the fourth ball valve (2-4) are in an open state, and cold water in the radiant pipe network (2-5) is subjected to self circulation; after a certain time (such as 10 minutes), the a end of the second electric three-way valve (2-1) is opened according to a certain proportion (such as 10 percent); when the water supply temperature of the radiant pipe network (2-5) is reduced to a certain limit value (such as 18 ℃), the a end of the second electric three-way valve (2-1) is closed; when the water supply temperature of the radiant pipe network (2-5) rises to a certain limit value (such as 21 ℃), the a end of the second electric three-way valve (2-1) is opened again, and the process is repeated;
(3) fresh air mode
Fresh air
When the concentration of the indoor carbon dioxide exceeds a design value and the natural ventilation condition is limited, an air conditioning system is required to provide fresh air; the heat pump unit (1-1) is in a shutdown state, the system controller (5-1) receives signals from an indoor carbon dioxide concentration sensor and then controls the first electric air valve (4-5) and the second electric air valve (4-6) to be in an open state, a fan inside the fresh air processor (4-4) runs, outdoor fresh air is filtered and enters the fresh air processor (4-4), sensible heat exchange is carried out on the outdoor fresh air and exhaust air, and then the outdoor fresh air is sent into a room through a fresh air pipeline and the air supply outlet (4-1); indoor air enters the fresh air processor (4-4) through the air outlet (4-2) and the air exhaust pipe, and is discharged outdoors after sensible heat exchange with the introduced fresh air;
② heating by fresh air
During the operation of a heating mode, when the system controller (5-1) receives a signal that the concentration of indoor carbon dioxide exceeds a set value, the first electric air valve (4-5) and the sixth ball valve (4-3) are controlled to be opened, and on the basis of the operation mode of the (3) first, fresh air and hot water are sent into a room through a fresh air pipeline and the air supply opening (4-1) after fully exchanging heat in the fresh air processor (4-4);
③ fresh air cooling and dehumidifying
During the operation of a refrigeration and dehumidification mode, when a system controller (5-1) receives a signal that the concentration of indoor carbon dioxide exceeds a set value, the first electric air valve (4-5) and the sixth ball valve (4-3) are controlled to be opened, and on the basis of the operation mode of the (3) first, fresh air and cold water are sent into a room through a fresh air pipeline and the air supply opening (4-1) after fully exchanging heat in the fresh air processor (4-4).
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Application publication date: 20191224 |