CN105588304B - A kind of indoor unit and its control method - Google Patents
A kind of indoor unit and its control method Download PDFInfo
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- CN105588304B CN105588304B CN201510444677.9A CN201510444677A CN105588304B CN 105588304 B CN105588304 B CN 105588304B CN 201510444677 A CN201510444677 A CN 201510444677A CN 105588304 B CN105588304 B CN 105588304B
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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
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
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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
- F24F13/30—Arrangement or mounting of heat-exchangers
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- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the present invention provides a kind of indoor unit and its control method, is related to field of air conditioning, can be improved the Energy Efficiency Ratio of multi-connected air conditioning system.Concrete scheme is：Indoor unit includes fresh air filter device, heat exchanging core, the first heat exchange module, fresh air air intake vent, fresh air air outlet, waste air air intake vent and waste air air outlet；The first port of fresh air filter device is connect with fresh air air intake vent, the second port of fresh air filter device and the first port of heat exchanging core connect, the second port of heat exchanging core is connect with the first port of the first heat exchange module, the second port of first heat exchange module is connect with fresh air air outlet, the third port of first heat exchange module and the liquid pipe shut-off valve of indoor unit connect, and the 4th port of the first heat exchange module and the tracheae shut-off valve of indoor unit connect；The third port of heat exchanging core is connect with waste air air intake vent, and the 4th port of heat exchanging core is connect with waste air air outlet；The present invention is used for the manufacture of indoor unit.
Description
Technical field
The present invention relates to field of air conditioning more particularly to a kind of indoor unit and its control methods.
Background technique
Multi-connected air conditioning system includes one or more outdoor unit and Duo Tai indoor unit, by between indoor unit and outdoor unit
Refrigerant circulation, indoor unit complete refrigeration or heating.With the continuous development in market, people are to multi-connected air conditioning system
Energy Efficiency Ratio requirement it is higher and higher, while diversified trend is presented in demand to multi-connected air conditioning system.Briefly, it consumes
Person needs multi-connected air conditioner to have more high energy efficiency ratio, i.e., in the identical situation of refrigerating capacity, energy consumption is lower, at the same time it is wished that more
Indoor unit respectively mutually can without influencing work.
In traditional Double tube multi-connected air conditioning system, connected by liquid pipe with tracheae between indoor unit and outdoor unit, no
It works under same operating mode with indoor unit in the same time, i.e., freeze simultaneously or heats simultaneously.In some applied fields
Jing Zhong, user need some indoor unit work in heating mode, other indoor units work in refrigeration mode, therefore Double tube is more
Connection formula air-conditioning system haves the defects that not to be able to satisfy user's diversified demand.
To overcome this defect, produce three control multi-connected air conditioning systems, between indoor unit and outdoor unit by liquid pipe,
Tracheae and exhaust pipe connection recycle thermal energy from outdoor unit by exhaust pipe, when part indoor unit works in cooling mode,
The thermal energy of exhaust pipe recycling can be used for heating, i.e. different indoor units can be in the same time in three control multi-connected air conditioning systems
Work is under different working modes.
It is all more double or from Energy Angle no matter three control multi-connected air conditioning systems are from meeting user's multi-demands angle
Control multi-connected air conditioning system is more superior.However, it is found by the inventors that existing heat is returned in three control multi-connected air conditioning systems
Debit's formula is the heat recovery between the indoor unit of different working modes in fact, for example, the room of a job in a heating mode
The thermal energy that interior machine is recycled, the thermal energy that the indoor unit in cooling mode that actually works is discharged, if an only room
Interior machine is in running order, then not can be carried out heat recovery.
Summary of the invention
The embodiment of the present invention provides a kind of indoor unit and its control method, more heats can be recycled, even if more
When only an indoor unit is in running order in connection formula air-conditioning system, heat recovery also can be realized, to improve multi-joint
The Energy Efficiency Ratio of formula air-conditioning system.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
In a first aspect, a kind of indoor unit is provided, including：Fresh air filter device, heat exchanging core, the first heat exchange module, newly
Wind air intake vent, fresh air air outlet, waste air air intake vent and waste air air outlet；
The first port of the fresh air filter device is connect with the fresh air air intake vent, and the second of the fresh air filter device
Port is connect with the first port of the heat exchanging core, the second port of the heat exchanging core and first heat exchange module
First port connection, the second port of first heat exchange module connect with the fresh air air outlet, and described first exchanges heat mould
The third port of block is connect with the liquid pipe shut-off valve of the indoor unit, the 4th port and the interior of first heat exchange module
The tracheae shut-off valve of machine connects；The third port of the heat exchanging core is connect with the waste air air intake vent, the heat exchanger core
4th port of body is connect with the waste air air outlet；
The fresh air filter device for being filtered to the fresh air introduced from the fresh air air intake vent, and will pass through
Fresh air after filter is conveyed to the heat exchanging core；
The heat exchanging core, for carrying out hot friendship to the fresh air air-flow and waste air air-flow that pass through the heat exchanging core
It changes；
First heat exchange module, for carrying out hot friendship to the refrigerant and fresh air air-flow for flowing through first heat exchange module
It changes.
Second aspect provides a kind of indoor unit control method, is applied to indoor unit provided by first aspect, including：
When indoor unit is in running order, the fresh air air-flow that will be introduced from fresh air air intake vent draws with from waste air air intake vent
The waste air air-flow entered carries out first time heat exchange；
Will after first time heat exchange fresh air air-flow the first heat exchange module carry out second of heat exchange；
Fresh air air-flow is exported by fresh air air outlet.
Indoor unit and its control method provided by the embodiment of the present invention, first by fresh air air-flow and waste air air-flow in heat
It exchanges and carries out first time heat exchange in core, then carry out second of heat exchange in the first heat exchange module with refrigerant, then will
Fresh air air-flow after heat exchange twice is blowed by fresh air air outlet to interior.After by first time heat exchange, newly
The temperature of general mood stream closer set temperature before comparing first time heat exchange.I.e. in cooling mode, it is handed over by heat for the first time
Inletting fresh air gas flow temperature reduces, and in a heating mode, is increased by first time heat exchange fresh air gas flow temperature.Compared with prior art
The middle air blowed to interior only and refrigerant carry out heat exchange technical solution, by first time heat exchange to fresh air air-flow into
Row preheating or pre-cooling, recycle waste air air-flow heat, improve the Energy Efficiency Ratio of multi-connected air conditioning system.Meanwhile multiple air conditioner
Whether the quantity of in running order indoor unit in adjusting system can recycle waste air air-flow heat not for each indoor unit
It has any impact, even if only an indoor unit is in running order, is also able to carry out heat recovery.Simultaneously as indoor
The standby function that purification filtering is carried out to air of equipment, user reduce two sets without still further independently installed fresh air system
System the space occupied, reduces installation cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, embodiment will be described below
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of indoor unit provided by the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of another kind indoor unit provided by the embodiment of the present invention one；
Fig. 3 is a kind of control method flow diagram of indoor unit provided by the embodiment of the present invention two.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
For the ease of clearly describing the technical solution of the embodiment of the present invention, in an embodiment of the present invention, use " the
One ", the printed words such as " second " distinguish function and the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not to be defined to quantity and execution order.
The embodiment of the present invention is related to three kinds of circulations or flow process altogether, respectively freezes between indoor unit and outdoor unit
The circulation of agent, the flowing of fresh air air-flow and waste air air-flow and indoor unit and the other water equipments of user between interior and outdoor
Between water circulation.It will be understood by those of skill in the art that in the embodiment of the present invention between disparate modules or device
Connection, for different circulation or flow process, refers to different types of connection.
Specifically, the connection for being related to refrigerant circulation refers to the connection that the pipeline for being used for transmission refrigerant is constituted, it is related to
The connection of fresh air air-flow and waste air air-flow flow process is the connection for being used for transmission the pipeline of fresh air or waste air and being constituted, and is related to
The connection of water circulation is the connection for being used for transmission the pipeline of hot and cold water and being constituted.
In addition, connection or some module of indoor unit between the outdoor unit and indoor unit that are referred in the present embodiment or
Connection between device, is not necessarily directly connected to, such as in actual application scenarios, between outdoor unit and indoor unit
Connection, may also need to be attached by some devices such as branch pipe, thus under one or more outdoor units
More indoor units in parallel.Connection between indoor unit disparate modules or device may also be needed for example, by filter etc.
Device is attached.
Embodiment one
The embodiment of the present invention provides a kind of indoor unit 1 of multi-connected air conditioning system, shown referring to Fig.1, and indoor unit 1 wraps
It includes：Fresh air filter device 11, heat exchanging core 12, the first heat exchange module 131, fresh air air intake vent 14, fresh air air outlet 15, waste air
Air intake vent 16 and waste air air outlet 17.
Fresh air filter device 11, for being filtered to the fresh air introduced from fresh air air intake vent 14, to filter out in air
Pollutant, including but not limited to oil smoke, dust, mould, formaldehyde, the substance to emit bad smell, or divided according to certain standards
One substance, such as PM (particulate matter, fine particle) 10, PM2.5 etc..
Fresh air filter device 11 includes two ports, the first port 111 and fresh air air intake vent 14 of fresh air filter device 11
Connection, fresh air air-flow enter fresh air filter device 11 by fresh air air intake vent 14.It indicates to be used for transmission newly with column pipeline in Fig. 1
The connection of wind and waste air.
Optionally, fresh air filter device 11 can filter out the pollution in fresh air air-flow by modes such as high-pressure electrostatic filterings
Object or fresh air filter device 11 include strainer, and the pollutant in air is filtered out by strainer.Fresh air filter device 11 can wrap
A plurality of types of strainers are included, different types of strainer is for filtering out different types of pollutant.Such as strainer specifically can be
PM2.5 strainer.
Preferably, indoor unit 1 can carry out timing to the time that blower rotates, and instruction is then exported after reaching certain timing
Modulating signal is replaced or is cleaned to indicate user to strainer.Particularly, it can be set to for the timing length of different strainers
Different value.
The second port 112 of fresh air filter device 11 is connect with the first port 121 of heat exchanging core 12.By fresh air mistake
The filtered fresh air air-flow of device 11 is filtered, is exported from the second port 112 of fresh air filter device 11, passes through fresh air filter device 11
Second port 112 and heat exchanging core 12 first port 121 between connection be transported to and state heat exchanging core 12.
Heat exchanging core 12 include four ports, from the first port 121 of heat exchanging core 12 flow into fresh air air-flow from
The second port 122 of heat exchanging core 12 flows out.The third port 123 of heat exchanging core 12 is connect with waste air air intake vent 16, heat
4th port 124 of exchange core 12 is connect with waste air air outlet 17, the dirt flowed into from the third port 123 of heat exchanging core 12
General mood stream is flowed out from the 4th port 124 of heat exchanging core 12.In fresh air air-flow and waste air air-flow by heat exchanging core 12
In the process, heat exchange is carried out by heat exchanging core 12.Wherein heat exchanging core 12 can be Total heat exchange core or sensible heat
Exchange core.
For ease of description, fresh air air-flow and heat exchanging process of the waste air air-flow in heat exchanging core 12 are known as the first time
Heat exchange.In cooling mode, the temperature of fresh air air-flow is higher than the temperature of waste air air-flow, by first time heat exchange, waste air gas
Stream absorbs heat from fresh air air-flow, and fresh air gas flow temperature reduces.In a heating mode, the temperature of fresh air air-flow is lower than waste air air-flow
Temperature, by first time heat exchange, fresh air air-flow absorbs heat from waste air air-flow, and fresh air gas flow temperature increases.
The second port 122 of heat exchanging core 12 is connect with the first port 1311 of the first heat exchange module 131.From heat exchange
The fresh air air-flow that the second port 122 of core 12 flows out, passes through the second port 122 and the first heat exchange module of heat exchanging core 12
Connection between 131 first port 1311 is transported to the first heat exchange module 131.
First heat exchange module 131 includes four ports, the fresh air flowed into from the first port 1311 of the first heat exchange module 131
Air-flow is flowed out from the second port 1312 of the first heat exchange module 131.The third port 1313 and indoor unit of first heat exchange module 131
1 liquid pipe shut-off valve 181 connects, and the 4th port 1314 of the first heat exchange module 131 and the tracheae shut-off valve 182 of indoor unit 1 connect
It connects.
First heat exchange module 131, for carrying out hot friendship to the refrigerant and fresh air air-flow for flowing through the first heat exchange module 131
It changes.Refrigerant and fresh air air-flow carry out heat exchange during passing through the first heat exchange module 131, for ease of description, by fresh air
The heat exchanging process of air-flow and refrigerant in the first heat exchange module 131 is known as second of heat exchange.It indicates to use with straight line in Fig. 1
In the connection of transmission refrigerant.
In cooling mode, indoor unit 1 is flowed into from the low-temperature refrigerant that outdoor unit exports from liquid pipe shut-off valve 181, passed through
Connection between liquid pipe shut-off valve 181 and the third port 1313 of the first heat exchange module 131 flows into the first heat exchange module 131, after
It flows out from the 4th port 1314 of the first heat exchange module 131, is cut by the 4th port 1314 and the tracheae of the first heat exchange module 131
The only connection between valve 182, flows back to outdoor unit.By second of heat exchange, low-temperature refrigerant absorbs heat from fresh air air-flow, newly
The temperature and humidity of general mood stream reduces.
In a heating mode, indoor unit 1 is flowed into from the high temperature refrigerant that outdoor unit exports from tracheae shut-off valve 182, from the
4th port 1314 of one heat exchange module 131 flows into, and flows out from the third port 1313 of the first heat exchange module 131.By second
Secondary heat exchange, fresh air air-flow absorb heat from high temperature refrigerant, and temperature increases.
The second port 1312 of first heat exchange module 131 is connect with fresh air air outlet 15, and fresh air air-flow is by second of warm
It exports after exchange from the second port 1312 of the first heat exchange module 131, is blowed by fresh air air outlet 15 to interior.
Indoor unit provided by the embodiment of the present invention, first by fresh air air-flow and waste air air-flow in heat exchanging core into
Row first time heat exchange, then second of heat exchange is carried out in the first heat exchange module with refrigerant, then it will be handed over by heat twice
Fresh air air-flow after changing is blowed by fresh air air outlet to interior.After by first time heat exchange, the temperature of fresh air air-flow
Closer set temperature before comparing first time heat exchange.I.e. in cooling mode, pass through first time heat exchange fresh air air-flow temperature
Degree reduces, and in a heating mode, is increased by first time heat exchange fresh air gas flow temperature.It is blowed compared to the prior art to interior
Air only and refrigerant carries out the technical solution of heat exchange, preheating or pre- is carried out to fresh air air-flow by first time heat exchange
It is cold, waste air air-flow heat is recycled, the Energy Efficiency Ratio of multi-connected air conditioning system is improved.Meanwhile it being in multi-connected air conditioning system
The quantity of the indoor unit of working condition does not cause any shadow for whether each indoor unit can recycle waste air air-flow heat
It rings, even if only an indoor unit is in running order, is also able to carry out heat recovery.Simultaneously as indoor unit has to sky
Gas carries out the function of purification filtering, and user reduces two systems occupancy without still further independently installed fresh air system
Space reduces installation cost.
Indoor unit 1 shown in FIG. 1, can be applied in Double tube multi-connected air conditioning system, in a kind of preferred embodiment party
In formula, referring to shown in Fig. 2, indoor unit 1 further includes the second heat exchange module 132, wherein the second heat exchange module 132 is cut including exhaust pipe
Only valve 183, to be suitable for three control multi-connected air conditioning systems.Wherein, the second heat exchange module 132 is used for flowing through the second heat exchange mould
The refrigerant and fresh air air-flow of block 132 carry out heat exchange.For ease of description, by fresh air air-flow and refrigerant in the second heat exchange module
Heat exchanging process in 132 is known as third time heat exchange.
Indoor unit 1 as shown in connection with fig. 2, in cooling mode, fresh air air-flow pass through after second of heat exchange, Ke Nengwen
Degree can be reduced to set temperature hereinafter, by third time heat exchange, the temperature of fresh air air-flow be increased, so that the temperature of fresh air air-flow
Degree reaches set temperature, to improve the flexibility to fresh air airflow temperature-control and the usage comfort of user.
Specifically, the second heat exchange module 132 includes four ports, the first port 1321 of the second heat exchange module 132 and the
The second port 1312 of one heat exchange module 131 connects, and the second port 1322 and fresh air air outlet 15 of the second heat exchange module 132 connect
It connects.The third port 1323 of second heat exchange module 132 is connect with the third port 1313 of the first heat exchange module 131, the second heat exchange
4th port 1324 of module 132 is connect with exhaust pipe shut-off valve 183.High temperature refrigerant in outdoor unit is ended by exhaust pipe
Valve 183 flows into indoor unit 1, flows into from the 4th port 1324 of the second heat exchange module 132, from the third of the second heat exchange module 132
It flows out port 1323.By third time heat exchange, fresh air air-flow is increased from refrigerant suction heat, temperature, at the same refrigerant by
High temperature becomes low temperature.
Low-temperature refrigerant passes through the third port 1323 of the second heat exchange module 132 and the third end of the first heat exchange module 131
Connection between mouth 1313 flows into the first heat exchange module 131, is flowed after flowing through the first heat exchange module 131 by tracheae shut-off valve 182
Return outdoor unit.
As shown in connection with fig. 2, the specific structure of the first heat exchange module 131 and the second heat exchange module 132 is described as follows：
First heat exchange module 131 includes first throttling device 1315 and First Heat Exchanger 1316.
Third port 1313 of the first port of first throttling device 1315 as the first heat exchange module 131, first throttle
The second port of device 1315 is connect with the first port of First Heat Exchanger 1316, the second port conduct of First Heat Exchanger 1316
4th port 1314 of the first heat exchange module 131.Optionally, first throttling device 1315 can be electromagnetic expanding valve.
Second heat exchange module 132 includes second throttling device 1325 and the second heat exchanger 1326.
Third port 1323 of the first port of second throttling device 1325 as the second heat exchange module 132, the second throttling
The second port of device 1325 is connect with the first port of the second heat exchanger 1326, the second port conduct of the second heat exchanger 1326
4th port 1324 of the second heat exchange module 132.Optionally, second throttling device 1325 can be electromagnetic expanding valve.
Many buildings now are recycled by water using floor heating, radiation refrigeration heating equipment etc. and are realized heating or refrigeration,
Empty to recycle suitable for water, indoor unit 1 can also include third heat exchange module 133, for flowing through third heat exchange module 133
Refrigerant and water flow carry out heat exchange, to realize water circulation heating or refrigeration.For ease of description, by refrigerant and water in third
Heat exchanging process in heat exchange module 133 is known as water circulation heat exchange.
Third heat exchange module 133 includes four ports, and the first port 1331 of third heat exchange module 133 is water inlet, the
The second port 1332 of three heat exchange modules 133 is water outlet, the third port 1333 and liquid pipe shut-off valve of third heat exchange module 133
181 connections, the 4th port 1334 of third heat exchange module 133 is connect with tracheae shut-off valve 182.
In cooling mode, refrigerant flows into indoor unit from the low-temperature refrigerant that outdoor unit exports from liquid pipe shut-off valve 181
1, by the connection between liquid pipe shut-off valve 181 and the third port 1333 of third heat exchange module 133, flow into third heat exchange module
133, after flowed out from the 4th port 1334 of third heat exchange module 133, by the 4th port 1334 of third heat exchange module 133 with
Connection between tracheae shut-off valve 182, flows back to outdoor unit.Heat exchange is recycled by water, low-temperature refrigerant absorbs the heat of water release
Amount, reduces water temperature.Water at low temperature is flowed out from the second port 1332 of third heat exchange module 133, flows into indoor water circulating pipe, real
Existing refrigerating function.
In a heating mode, indoor unit 1 is flowed into from the high temperature refrigerant that outdoor unit exports from tracheae shut-off valve 182, from the
4th port 1334 of three heat exchange modules 133 flows into, and flows out from the third port 1333 of third heat exchange module 133.It is followed by water
Ring heat exchange, water absorb heat from high temperature refrigerant, and water temperature increases.Second port of the high-temperature water from third heat exchange module 133
1332 outflows flow into indoor water circulating pipe, realize heat-production functions.Certainly, the second port 1332 of third heat exchange module 133 is gone back
It can connect bathroom or kitchen, bath water and water for kitchen use be provided.
As shown in connection with fig. 2, third heat exchange module 133 includes third throttling set 1335 and third heat exchanger 1336.In Fig. 2
The connection for water delivery is indicated with column pipeline.Wherein, the first port of third throttling set 1335 is as third heat exchange module
The second port of 133 third port 1333, third throttling set 1335 is connect with the first port of third heat exchanger 1336, the
Fourth port 1334 of the second port of three heat exchangers 1336 as third heat exchange module 133.Optionally, third throttling set
1335 can be electromagnetic expanding valve, and third heat exchanger 1336 is plate heat exchanger.
Optionally, indoor unit 1 further includes water pump 1336, is set to the pipe of the second port 1332 of third heat exchange module 133
On road, as the switch of indoor water circulation, water pumping is connected by circulation to indoor water.
Optionally, as shown in connection with fig. 2 the first heat exchange module 131, the second heat exchange module 132 and third heat exchange module
133 specific structure, can in the two sides of first throttling device 1315, second throttling device 1325 and third throttling set 1335
To install filter (being not drawn into Fig. 2), to prevent throttling set to be affected the flow rate control accuracy of refrigerant.
Indoor unit provided by the embodiment of the present invention, first by fresh air air-flow and waste air air-flow in heat exchanging core into
Row first time heat exchange, then second of heat exchange is carried out in the first heat exchange module with refrigerant, then it will be handed over by heat twice
Fresh air air-flow after changing is blowed by fresh air air outlet to interior.After by first time heat exchange, the temperature of fresh air air-flow
Closer set temperature before comparing first time heat exchange.I.e. in cooling mode, pass through first time heat exchange fresh air air-flow temperature
Degree reduces, and in a heating mode, is increased by first time heat exchange fresh air gas flow temperature.It is blowed compared to the prior art to interior
Air only and refrigerant carries out the technical solution of heat exchange, preheating or pre- is carried out to fresh air air-flow by first time heat exchange
It is cold, waste air air-flow heat is recycled, the Energy Efficiency Ratio of multi-connected air conditioning system is improved.Meanwhile it being in multi-connected air conditioning system
The quantity of the indoor unit of working condition does not cause any shadow for whether each indoor unit can recycle waste air air-flow heat
It rings, even if only an indoor unit is in running order, is also able to carry out heat recovery.Simultaneously as indoor unit has to sky
Gas carries out the function of purification filtering, and user reduces two systems occupancy without still further independently installed fresh air system
Space reduces installation cost.Further, be equipped in the building that is connected by circulation of water indoors, by third heat exchange module to
Indoor water is connected by circulation conveying hot water or cold water to realize water circularly cooling or heating, and can provide bath water, kitchen
Fresh air filtering, fresh air refrigerating heating, water circulation system are realized from there through indoor unit provided by the embodiment of the present invention with water
Cold heat-production functions provide the solution of integral type for user, have saved and installed and used cost, reduced space hold, be
User provides great convenience.
Embodiment two
Based on indoor unit provided by embodiment one, second embodiment of the present invention provides a kind of control method of indoor unit, ginsengs
According to shown in Fig. 3, include the following steps：
301, when indoor unit is in running order, the fresh air air-flow that will be introduced from fresh air air intake vent, and from waste air inlet air
The waste air air-flow that mouth introduces carries out first time heat exchange.
Wherein, first time heat exchange refers to, fresh air air-flow and heat exchanging process of the waste air air-flow in heat exchanging core.
In cooling mode, the temperature of fresh air air-flow is higher than the temperature of waste air air-flow, by first time heat exchange, waste air gas
Stream absorbs heat from fresh air air-flow, and fresh air gas flow temperature reduces.
In a heating mode, the temperature of fresh air air-flow is lower than the temperature of waste air air-flow, by first time heat exchange, new general mood
Stream absorbs heat from waste air air-flow, and fresh air gas flow temperature increases.
302, will after first time heat exchange fresh air air-flow the first heat exchange module carry out second of heat exchange.
Wherein, second of heat exchange refers to, fresh air air-flow and refrigerant are handed in the first heat exchange module with the heat of refrigerant
Change process.
By second of heat exchange, low-temperature refrigerant absorbs heat, the temperature and humidity drop of fresh air air-flow from fresh air air-flow
It is low.
The specific structure of indoor unit as shown in connection with fig. 2, if indoor unit can also include dry temperature sensor, for room
Temperature at interior machine different device is monitored, and the refrigerant flow rates of different device are flowed through according to the result adjustment measured, thus
Realize the accurate control to fresh air gas flow temperature.Wherein, refrigerant flow rates refer to the amount of the refrigerant flowed through within the unit time,
It can specifically be measured with volume or quality of refrigerant etc. is conveyed in the unit time.
Illustratively, the temperature value of First Heat Exchanger two sides is obtained by temperature sensor measurement, it is true according to temperature gap
The reasonable value of the refrigerant flow rates of First Heat Exchanger is crossed in constant current, and by first throttling device to the refrigeration for flowing through First Heat Exchanger
Agent flow velocity is adjusted.Similarly, corresponding system is determined according to the second heat exchanger, the temperature value of third heat exchanger two sides respectively
The reasonable value of cryogen flow velocity, and refrigerant flow rates are adjusted by second throttling device, third throttling set respectively.
303, the first temperature value is obtained, the first temperature value is fresh air air-flow in the temperature value after second of heat exchange.
Under refrigeration mode, fresh air air-flow passes through after second of heat exchange, and possible temperature can be reduced to set temperature or less.
The first temperature value is obtained, for determining fresh air air-flow in the temperature value after second of heat exchange, if be lower than set temperature
Value.In conjunction with step 302, can at the first port of the second heating module mounting temperature sensor, to obtain the first temperature value.
304, when the first temperature value is less than set temperature value, the second throttling dress of the second heat exchange module of indoor unit is opened
It sets, third time heat exchange is carried out to fresh air air-flow.
Wherein, third time heat exchange refers to, the heat exchanging process of fresh air air-flow and refrigerant in the second heat exchange module.
Optionally, can at the second port of the second heating module mounting temperature sensor, with determine from second heat exchange
Whether the temperature of the fresh air air-flow of module output reaches set temperature.At the first port to the second heating module, and
The temperature of fresh air air-flow is monitored at the second port of second heating module, adjusts the aperture of second throttling device, with adjustment
The flow velocity for flowing through the refrigerant of the second heat exchanger achievees the purpose that the temperature for adjusting fresh air air-flow.
305, fresh air air-flow is exported by fresh air air outlet.
In conjunction with step 303-304, under refrigeration mode, after first time heat exchange and second of heat exchange, if fresh air
The temperature of air-flow is lower than set temperature, then carries out third time heat exchange, if the temperature of fresh air air-flow meets set temperature, be not necessarily to
Carry out third time heat exchange.After fresh air air-flow passes through the second heat exchange module, blowed by fresh air air outlet to interior.
In a heating mode, second throttling device can be normally opened, then first time heat exchange, second of heat exchange and third
In secondary heat exchange, fresh air air-flow absorbs heat heating.It is detected, is adjusted each by the temperature value of the fresh air air-flow to different location
The aperture of throttling set is adjusted the flow velocity for the refrigerant for flowing through each device, and temperature is finally met the new of set temperature
General mood stream is blowed by fresh air air outlet to interior.
306, the third throttling set of indoor unit third heat exchange module and the water of indoor unit in a heating mode, are opened
Pump, exports hot water by water pump.
Floor heating, radiation refrigeration heating equipment etc. are being used, is being recycled in the building for realizing heating or refrigeration, is passed through by water
Third heat exchange module carries out water and recycles heat exchange, supplies water to indoor water circulating apparatus.Specifically, in a heating mode when, open
Third throttling set and water pump, to indoor water circulating apparatus heat outputting water.
Wherein the heat exchange of water circulation refers to, by the heat exchanging process of refrigerant and water in third heat exchange module.
307, the third throttling set of indoor unit third heat exchange module and the water of indoor unit in cooling mode, are opened
Pump, exports cold water by water pump.
It is understood that step 306 and step 307 are illustrated for different working modes, there is no successively suitable
Sequence.
Indoor unit control method provided by the embodiment of the present invention, first by fresh air air-flow and waste air air-flow in heat exchange
First time heat exchange is carried out in core, then carries out second of heat exchange in the first heat exchange module with refrigerant, then will be passed through
The fresh air air-flow after heat exchange is blowed by fresh air air outlet to interior twice.After by first time heat exchange, new general mood
The temperature of stream closer set temperature before comparing first time heat exchange.I.e. in cooling mode, new by first time heat exchange
Wind gas flow temperature reduces, and in a heating mode, is increased by first time heat exchange fresh air gas flow temperature.Compared to the prior art to
The air that interior blows only carries out the technical solution of heat exchange with refrigerant, is carried out by first time heat exchange to fresh air air-flow pre-
Heat or pre-cooling, recycle waste air air-flow heat, improve the Energy Efficiency Ratio of multi-connected air conditioning system.Meanwhile multi-connected air conditioner system
The quantity of in running order indoor unit in system is not caused for whether each indoor unit can recycle waste air air-flow heat
Any influence is also able to carry out heat recovery even if only an indoor unit is in running order.Simultaneously as indoor equipment
The standby function that purification filtering is carried out to air, user reduce two systems without still further independently installed fresh air system
The space occupied reduces installation cost.Further, it is equipped in the building that water is connected by circulation, is exchanged heat by third indoors
Module is connected by circulation conveying hot water or cold water to indoor water to realize water circularly cooling or heating, and can provide bathing use
Water, water for kitchen use realize fresh air filtering, fresh air refrigerating heating, water from there through indoor unit provided by the embodiment of the present invention
Circularly cooling heat-production functions provide the solution of integral type for user, have saved and installed and used cost, reduce space and account for
With providing great convenience for user.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. a kind of indoor unit, which is characterized in that including：Fresh air filter device, heat exchanging core, the first heat exchange module, fresh air enter
Air port, fresh air air outlet, waste air air intake vent and waste air air outlet；
The first port of the fresh air filter device is connect with the fresh air air intake vent, the second port of the fresh air filter device
It is connect with the first port of the heat exchanging core, the of the second port of the heat exchanging core and first heat exchange module
Single port connection, the second port of first heat exchange module are connect with the fresh air air outlet, first heat exchange module
Third port is connect with the liquid pipe shut-off valve of the indoor unit, the 4th port and the indoor unit of first heat exchange module
The connection of tracheae shut-off valve；The third port of the heat exchanging core is connect with the waste air air intake vent, the heat exchanging core
4th port is connect with the waste air air outlet；
The fresh air filter device, for being filtered to the fresh air introduced from the fresh air air intake vent, and will be after filtering
Fresh air conveyed to the heat exchanging core；
The heat exchanging core, for Jing Guo the heat exchanging core fresh air air-flow and waste air air-flow carry out heat exchange；
First heat exchange module, for carrying out heat exchange to the refrigerant and fresh air air-flow for flowing through first heat exchange module；
The indoor unit further includes the second heat exchange module and exhaust pipe shut-off valve；
The first port of second heat exchange module is connect with the second port of first heat exchange module, the second heat exchange mould
The second port of block is connect with the fresh air air outlet；
The third port of second heat exchange module is connect with the third port of first heat exchange module, the second heat exchange mould
4th port of block is connect with the exhaust pipe shut-off valve；
Second heat exchange module is used for, and carries out heat exchange to the refrigerant and fresh air air-flow for flowing through second heat exchange module.
2. indoor unit according to claim 1, which is characterized in that first heat exchange module include first throttling device and
First Heat Exchanger, second heat exchange module include second throttling device and the second heat exchanger；
Third port of the first port of the first throttling device as first heat exchange module, the first throttling device
Second port connect with the first port of the First Heat Exchanger, the second port of the First Heat Exchanger is as described first
4th port of heat exchange module；
Third port of the first port of the second throttling device as second heat exchange module, the second throttling device
Second port connect with the first port of second heat exchanger, the second port of second heat exchanger is as described second
4th port of heat exchange module.
3. indoor unit according to claim 1, which is characterized in that the indoor unit further includes third heat exchange module；
The first port of the third heat exchange module is water inlet, and the second port of the third heat exchange module is water outlet, institute
The third port for stating third heat exchange module is connect with the liquid pipe shut-off valve, the 4th port of the third heat exchange module with it is described
The connection of tracheae shut-off valve；
The third heat exchange module, for carrying out heat exchange to the refrigerant and water flow for flowing through the third heat exchange module.
4. indoor unit according to claim 3, which is characterized in that the third heat exchange module include third throttling set and
Third heat exchanger；
Third port of the first port of the third throttling set as the third heat exchange module, the third throttling set
Second port connect with the first port of the third heat exchanger, the second port of the third heat exchanger is as the third
4th port of heat exchange module.
5. indoor unit according to claim 4, which is characterized in that
The third heat exchanger is plate heat exchanger；
The indoor unit further includes water pump, is set on the pipeline of the second port of the third heat exchange module.
6. indoor unit according to claim 1-5, which is characterized in that
The fresh air filter device includes PM2.5 strainer.
7. a kind of control method applied to the indoor unit as described in claim any one of 1-6, which is characterized in that including：
When indoor unit is in running order, the fresh air air-flow that will be introduced from fresh air air intake vent and is introduced from waste air air intake vent
Waste air air-flow carries out first time heat exchange；
Will after first time heat exchange fresh air air-flow the first heat exchange module carry out second of heat exchange；
Fresh air air-flow is exported by fresh air air outlet.
8. the method according to the description of claim 7 is characterized in that it is described will after first time heat exchange fresh air air-flow
After one heat exchange module carries out second of heat exchange, the method also includes：
The first temperature value is obtained, first temperature value is fresh air air-flow in the temperature value after second of heat exchange；
When first temperature value is less than set temperature value, the second throttling device of the second heat exchange module of indoor unit is opened, it is right
Fresh air air-flow carries out third time heat exchange.
9. the method according to the description of claim 7 is characterized in that the method also includes：
In a heating mode, the third throttling set of indoor unit third heat exchange module and the water pump of indoor unit are opened, water is passed through
Pump output hot water；
In cooling mode, the third throttling set of indoor unit third heat exchange module and the water pump of indoor unit are opened, water is passed through
Pump output cold water.
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| CN110319527A (en) * | 2018-03-30 | 2019-10-11 | 珠海格力电器股份有限公司 | Machine in new trend device and air conditioning |
| CN108397829B (en) * | 2018-04-20 | 2021-05-25 | 青岛海尔空调器有限总公司 | Fresh air conditioner indoor unit |
| CN110131828A (en) * | 2019-05-22 | 2019-08-16 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of suitable for south building inner region multi-line system and its for cooling method |
| CN110388731B (en) * | 2019-07-26 | 2021-03-16 | 广东美的暖通设备有限公司 | Control method and system of air conditioning system, air conditioning system and computer device |
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