CN109357434A - It is a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU) - Google Patents
It is a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU) Download PDFInfo
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- CN109357434A CN109357434A CN201811443555.8A CN201811443555A CN109357434A CN 109357434 A CN109357434 A CN 109357434A CN 201811443555 A CN201811443555 A CN 201811443555A CN 109357434 A CN109357434 A CN 109357434A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 20
- 238000010257 thawing Methods 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 238000004321 preservation Methods 0.000 claims abstract description 19
- 239000003507 refrigerant Substances 0.000 claims description 46
- 238000001704 evaporation Methods 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000007791 dehumidification Methods 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000008020 evaporation Effects 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/06—Several compression cycles arranged in parallel
- F25B2400/061—Several compression cycles arranged in parallel the capacity of the first system being different from the second
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU), including outdoor unit, indoor unit and heat transfer unit (HTU), outdoor unit includes the first compressor, first liquid storage device, first four-way valve, second compressor, second liquid storage device, second four-way valve and outdoor heat exchanger, outdoor heat exchanger includes the first heat exchanging part and the second heat exchanging part, first compressor of indoor unit and outdoor unit, first liquid storage device, first four-way valve, first heat exchanging part connects to form flow cycle one, second compressor of heat transfer unit (HTU) and outdoor unit, second liquid storage device, second four-way valve, second heat exchanging part connects to form flow cycle two.The present invention forms two independent flow cycles using double-compressor, can avoid noise and system reliability reduces, it is precisely controlled capacity, heat preservation dehumidifying, heat preservation defrosting and quickly heat exchange is realized, flow cycle is also changed by control valve and triple valve and realizes more efficient independent heat exchange.
Description
Technical field
The invention belongs to air-conditioning technical fields, and in particular to a kind of based on the air-conditioning of double-compressor room in parallel with heat transfer unit (HTU)
Interior temperature control system.
Background technique
Since traditional compressor only has a liquid storage device, therefore an only compressor inlet, and in air conditioner indoor unit
In the indoor temperature control system in parallel with heat transfer unit (HTU), exchanged heat using indoor heat exchanger and heat transfer unit (HTU) independent control to interior
Or dehumidifying movement, but when the interior temperature control system enters dehumidification mode, the evaporating temperature of indoor heat exchanger is needed due to dehumidifying
Lower than the dew-point temperature of room air, such as 8 DEG C or lower, and under normal indoor refrigeration mode, indoor heat exchanger and heat transfer dress
The evaporating temperature set is higher, and such as 18 DEG C or higher (because the heat exchange area of heat transfer unit (HTU) is larger, exchange heat quickly, so evaporation temperature
It spends higher)；Based on the above circumstances, on the one hand, when the system enters the room dehumidification mode, if setting indoor heat exchanger and heat transfer
The evaporating temperature of device is different, then will appear the refrigerant outlet pressure of indoor heat exchanger pipeline far below heat transfer unit (HTU) pipeline
The case where refrigerant outlet pressure, the refrigerant circuit of two kinds of different pressures can generate mixing pulsation, to generate noise or shadow
Ring pipe-line system functional reliability；On the other hand, what dehumidification mode refrigerant was walked is refrigeration cycle, the temperature of indoor heat exchanger at
For evaporating temperature, and what heating mode refrigerant was walked is heating circulation, and the temperature of indoor heat exchanger becomes condensation temperature, due to room
Refrigerant flow direction in external heat exchanger cannot be on the contrary, can not be achieved refrigerant a part with the same compressor walks refrigeration cycle
A part walks heating circulation, naturally also just cannot achieve and maintains room temperature in dehumidifying, results in current air-conditioning system in this way
System is wanted to realize dehumidification mode, will necessarily room temperature be reduced, cause the sense of discomfort of user's cold.Since different steamings are arranged
Hair temperature can cause variety of problems as described above, and such interior temperature control system can not be only by the temperature of the system, humidity
The advantages of vertical dual control, effectively plays.
As for being proposed before using duplex cylinder compressor+bis- liquid storage devices mode, although two kinds of different evaporations may be implemented
Temperature, but due to being compressed using the same compressor, the swept volume of compressor first be it is certain, dehumidifying
It needs for refrigerant to be divided into two parts in the process to respectively enter in indoor heat exchanger and heat transfer unit (HTU), although can pass through herein
Respective throttling set realizes different evaporating temperatures, but can cause energy waste using insufficient due to refrigerant.
Specifically, the double liquid storage devices of twin-tub are by sucking the refrigerant of different evaporating pressures in two cylinders, then cooperate twin-tub
Swept volume Bizet be able to achieve again under the compression of same electric machine frequency, capacity is certain, and refrigerant enters subsequent cycle, but presses
What the twin-tub swept volume of contracting machine was usually fixed at the very start, therefore swept volume is fixed and invariable than also, it can not be according to two
It is that the actual ratio of condensation temperature changes to cooperate, such as preferably dehumidifies that a evaporating temperature even one, which is evaporating temperature one,
Evaporating temperature be 8 DEG C, refrigeration evaporator temperature be 18 DEG C, when practically necessary indoor unit evaporating temperature be 5 DEG C, refrigeration evaporator temperature
When degree is 18 DEG C, since actual evaporation temperature causes evaporating pressure than different than difference, the twin-tub swept volume of regular collocation is just
Capacity demand at this time cannot be met again, will cause that pressure at expulsion is excessive or too small influence capacity, so influence dehumidifying or
Refrigeration effect；May capacity excessively be resulted in waste of resources if improving electric machine frequency, if keeping the constant possibility of electric machine frequency
So that capacity deficiency is to form target evaporating temperature.
Summary of the invention
For the deficiency in the presence of the prior art, two independent systems are formed using double-compressor the present invention provides a kind of
Cryogen flow cycle, the refrigerant mixing that can avoid different pressures cause noise and system reliability to reduce, can be precisely controlled
Capacity, while avoid energy waste, can be realized heating using low evaporating temperature as indoor dehumidification, can be realized it is indoor quickly
Heat exchange based on the air-conditioning of double-compressor it is in parallel with heat transfer unit (HTU) interior temperature control system.
It is a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU), including outdoor unit, interior
Machine unit and heat transfer unit (HTU), the outdoor unit include the first compressor, the first liquid storage device, the first four-way valve, the second compression
Machine, the second liquid storage device, the second four-way valve and outdoor heat exchanger, the outdoor heat exchanger include the first heat exchanging part and the second heat exchange
Portion, the indoor unit include indoor heat exchanger, the first compressor of the indoor unit and outdoor unit, the first storage
Liquid device, the first four-way valve, the first heat exchanging part connect to form refrigerant flow cycle one, the heat transfer unit (HTU) and outdoor unit
Second compressor, the second liquid storage device, the second four-way valve, the second heat exchanging part connect to form refrigerant flow cycle two, the refrigeration
Agent flow cycle one and refrigerant flow cycle two respectively use one group of throttling set.
Further, it is equipped with connecting line between first heat exchanging part and the second heat exchanging part, is set on the connecting pipeline
There is the control valve for being connected to and separating between the first heat exchanging part of control and the second heat exchanging part；First heat exchanging part and the first four-way valve
Between pipeline be equipped with third triple valve, the branch C of the third triple valve is connected on the export pipeline of the second heat exchanging part,
Branch A is connected to the first heat exchanging part, and branch B is connected to the first four-way valve；The third triple valve can be such that branch A connects with B
Or connect branch A with C.
Further, when entering quickly heat exchange mode, described a first compressor and a second compressor starts work, if
This system does not include control valve and third triple valve, then:
Indoor radiation heat transfer device and indoor set heat exchanger are room air heat exchange simultaneously；
If this system includes control valve and third triple valve:
The control valve separates the connecting line between the first heat exchanging part and the second heat exchanging part, and the third triple valve is connected
Branch A and B separate branch C；Indoor radiation heat transfer device and indoor set heat exchanger are room air heat exchange simultaneously.
Further, when entering individually heat exchange mode, second compressor start work, the control valve connects the
Connecting line between one heat exchanging part and the second heat exchanging part, the third triple valve connect branch A and C and separate branch B；It is described
Heat transfer unit (HTU) provides duration heat exchange for room air.
Further, when entering heat preservation dehumidification mode, described a first compressor and a second compressor starts work, if
This system does not include control valve and third triple valve, then:
The evaporating temperature of the indoor heat exchanger is set lower than room air dew-point temperature, be arranged the evaporation of heat transfer unit (HTU)/
Condensation temperature keeps constant room temperature, provides duration heat exchange for room air；
If this system includes control valve and third triple valve:
The control valve separates the connecting line between the first heat exchanging part and the second heat exchanging part, and the third triple valve is connected
Branch A and B separate branch C；The evaporating temperature of the indoor heat exchanger is set lower than room air dew-point temperature, setting heat transfer
The evaporation/condensation temperature of device keeps constant room temperature, provides duration heat exchange for room air.
Further, when entering heat preservation defrosting mode, a first compressor and a second compressor starts work, if this is
System does not include control valve and third triple valve, then:
The first setting time of second compressor and heat transfer unit (HTU) heating operation, the second heat exchanging part absorb heat, simultaneously
First compressor and indoor heat exchanger defrosting the first setting time of operating, the first heat exchanging part discharge heat；When the described first setting
Between after the second compressor and heat transfer unit (HTU) defrosting the second setting time of operating, the second heat exchanging part discharges heat, while first
The second setting time of compressor and indoor heat exchanger heating operation, the first heat exchanging part absorb heat；First setting time and
Second setting time circulation running to heat preservation defrosting mode terminates；
If this system includes control valve and third triple valve:
The control valve separates the connecting line between the first heat exchanging part and the second heat exchanging part, and the third triple valve is connected
Branch A and B separate branch C；The first setting time of second compressor and heat transfer unit (HTU) heating operation, the second heat exchanging part are inhaled
Heat is received, while the first compressor and indoor heat exchanger defrosting the first setting time of operating, the first heat exchanging part discharge heat；It is described
Second compressor and heat transfer unit (HTU) defrosting the second setting time of operating, the second heat exchanging part release heat after first setting time
Amount, while the second setting time of the first compressor and indoor heat exchanger heating operation, the first heat exchanging part absorb heat；Described first
Setting time and the second setting time circulation running to heat preservation defrosting mode terminate.
Further, the heat transfer unit (HTU) includes coupled heat exchanger, and the displacement of second compressor is greater than
The displacement of first compressor, second setting time are greater than the first setting time.
Further, the heat transfer unit (HTU) includes coupled heat exchanger, in the second setting time, the coupled heat exchanger
Evaporating temperature is not less than the dew-point temperature of room air.
Further, the heat transfer unit (HTU) includes capillary network radiating system, is set when heat preservation defrosting mode operates in second
When fixing time, pump rotary speed is suitably reduced, water velocity in capillary network is slowed down.
Further, the displacement of second compressor is greater than the displacement of the first compressor.
Compared with the prior art, the invention has the following beneficial effects:
The application is by using two compressors simultaneously in the air conditioner indoor unit indoor temperature control system in parallel with heat transfer unit (HTU)
Outdoor heat exchanger is divided into two independent heat exchanging part, two heat exchanging part correspond respectively with indoor unit and heat transfer unit (HTU)
Connection forms two independent flow cycles so that the refrigerant in two flow cycles independently circulates
System realizes quickly heat exchange mode, individually heat exchange mode, heat preservation dehumidification mode and the operation for keeping the temperature the various modes such as defrosting mode.
The effect specifically obtained is as follows: the refrigerant for 1. avoiding different pressures, which mixes caused noise and system reliability, to be reduced；
2. can separately adjustable two compressors of evaporating temperature according to actual needs electric machine frequency, realize accurately capacity；③
Compressor by the way that certain swept volume is used alone provides refrigerant for indoor unit, adjusts compressor air-discharging as needed
Mouth pressure is to effectively avoid energy waste；4. can be realized heat transfer unit (HTU) while heating, indoor unit is with low evaporation
Temperature is indoor dehumidification；5. two compressors can be used simultaneously when indoor unit and heat transfer unit (HTU) need heat supply simultaneously
It forms overall big capacity and meets indoor quickly heat exchange；6. may be implemented to carry out outdoor unit heat exchange in the state of keeping the temperature indoors
The heat preservation defrosting mode of device defrosting, guarantees the experience of user.The interior that air conditioner indoor unit can be made in parallel with heat transfer unit (HTU) in this way
The characteristics of temperature of temperature control system, humidity separate double control, can preferably play.In addition, the present invention also pass through setting control valve and
Third triple valve further improves independent heat exchange mode, and two heat exchanging part are connected and it is allowed to exchange heat jointly, hence it is evident that increases
Big heat exchange area, effectively increases heat exchange efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 2.
Wherein, 1 outdoor unit, 101 first compressors, 102 first liquid storage devices, 103 first four-way valves, 104 first change
Hot portion, 111 second compressors, 112 second liquid storage devices, 113 second four-way valves, 114 second heat exchanging part, 115 control valves, 116
Three triple valves, 20 indoor units, 201 indoor heat exchangers, 202 first throttling devices, 21 heat transfer unit (HTU)s, 211 coupled heat exchangers,
212 water pumps, 213 first triple valves, 214 second triple valves, 215 second throttling devices.
Specific embodiment
In order to which the technical means, creative features, achievable purpose and effectiveness for realizing invention are easy to understand, below with reference to
It is specifically illustrating, the present invention is further explained.
As shown in Figure 1, a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU), including outdoor unit
Unit 1, indoor unit 20 and heat transfer unit (HTU) 21, outdoor unit 1 include the first compressor 101, the first liquid storage device 102, the
One four-way valve 103, the second compressor 111, the second liquid storage device 112, the second four-way valve 113 and outdoor heat exchanger, the outdoor are changed
Hot device includes the first heat exchanging part 104 and the second heat exchanging part 114, and the indoor unit includes indoor heat exchanger 201, the interior
The first compressor 101, the first liquid storage device 102, the first four-way valve 103, the first heat exchanging part of machine unit 20 and outdoor unit 1
104 connections form refrigerant flow cycle one, and the second compressor 111, second of the heat transfer unit (HTU) 21 and outdoor unit 1 stores up
Liquid device 112, the second four-way valve 113, the connection of the second heat exchanging part 114 form refrigerant flow cycle two, and the refrigerant circulates back
Road one and refrigerant flow cycle two respectively use one group of throttling set.Heat transfer unit (HTU) can be heat-transfer pipe in this system, can also
To be heat-transfer pipe and heat pipe coupler, coupled heat exchanger and capillary network radiating system can also be.
When system enters the room dehumidification mode, two compressors start work, and indoor heat exchanger and heat transfer are filled
Settable different evaporating temperature is set, the first heat exchanging part and the second heat exchanging part of outdoor heat exchanger are divided into two by throttling set
Independent flow pipe, the first compressor, the first liquid storage device, the first four-way valve, the first heat exchanging part of outdoor heat exchanger and interior
Machine unit constitutes independent loop dehumidification one, the second compressor, the second liquid storage device, the second four-way valve, outdoor heat exchanger second
Heat exchanging part is connected with heat transfer unit (HTU) ties up temperature loops two in forming chamber.Two circuits undertake interior respectively with different evaporating temperatures and remove
Work that is wet and maintaining room temperature constant.
When system enters individually heat exchange mode, the second compressor start works, and has refrigerant circulation in the second heat exchanging part,
Second compressor provides refrigerant for coupled heat exchanger, and indoor radiation heat transfer device provides duration heat exchange for room air.
So the refrigerant for not only avoiding different pressures, which mixes caused noise and system reliability, to be reduced；Also
Can separately adjustable two compressors of evaporating temperature according to actual needs electric machine frequency, realize accurately capacity；Lead to again
It crosses and the compressor of certain swept volume is used alone provides refrigerant for indoor unit, adjust exhaust outlet of compressor as needed
Pressure is to effectively avoid energy waste；Also it can be realized heat transfer unit (HTU) while heating, indoor unit is with low evaporation temperature
Degree is indoor dehumidification.In addition, two compressors can be used simultaneously when indoor unit and heat transfer unit (HTU) need heat supply simultaneously
It forms overall big capacity and meets indoor quickly heat exchange.
As a further optimization of the scheme , as shown in Fig. 2, being equipped with connection between first heat exchanging part and the second heat exchanging part
Pipeline, the connecting pipeline are equipped with the control valve for being connected to and separating between the first heat exchanging part of control and the second heat exchanging part；It is described
Pipeline between first heat exchanging part and the first four-way valve is equipped with third triple valve, and the branch C of the third triple valve is connected to
On the export pipeline of second heat exchanging part, branch A is connected to the first heat exchanging part, and branch B is connected to the first four-way valve；Described 3rd 3
Port valve can be such that branch A connects with B or connect branch A with C.Connecting line between the first heat exchanging part and the second heat exchanging part
When connection, the branch A of the third triple valve is connected with C, branch B partition；When between the first heat exchanging part and the second heat exchanging part
When connecting line separates, the branch A of the third triple valve is connected with B, branch C partition.
When system enters individually heat exchange mode, the work of the second compressor start, the first heat exchanging part and the second heat exchanging part it
Between connecting line connect, the branch A of third triple valve connects with C, and branch B separates, and the second compressor mentions for coupled heat exchanger
For refrigerant, indoor radiation heat transfer device provides duration heat exchange for room air.This programme is by increasing control valve and third
Triple valve can be realized the more efficient independent heat exchange mode of scheme compared with before.Although scheme before is also able to achieve individually
Heat exchange mode, but outdoor heat exchanger only one of which heat exchanging part is operating, and can be by two heat exchanging part after utilization this programme
It connects and it is allowed to exchange heat jointly, hence it is evident that increase heat exchange area, effectively increase heat exchange efficiency.
Embodiment 1:
As shown in Figure 1, a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU), including outdoor unit
Unit 1, indoor unit 20 and heat transfer unit (HTU) 21, outdoor unit 1 include the first compressor 101, the first liquid storage device 102, the
One four-way valve 103, the second compressor 111, the second liquid storage device 112, the second four-way valve 113 and outdoor heat exchanger, the outdoor are changed
Hot device includes the first heat exchanging part 104 and the second heat exchanging part 114, and the indoor unit includes indoor heat exchanger 201, the interior
The first compressor 101, the first liquid storage device 102, the first four-way valve 103, the first heat exchanging part of machine unit 20 and outdoor unit 1
104 connections form refrigerant flow cycle one, and the second compressor 111, second of the heat transfer unit (HTU) 21 and outdoor unit 1 stores up
Liquid device 112, the second four-way valve 113, the connection of the second heat exchanging part 114 form refrigerant flow cycle two, and the refrigerant circulates back
Road one further includes first throttling device 202, and the refrigerant flow cycle two further includes second throttling device 215.The present embodiment
Described in heat transfer unit (HTU) use capillary network radiating system and coupled heat exchanger.
The refrigerant flow cycle one is connected by such as under type: the first compressor 101 connects the first liquid storage device 102, the
One four-way valve 103 respectively with first compressor 101, the first liquid storage device 102, indoor heat exchanger 201 and the first heat exchanging part
104 one end connection, 104 other end of the first heat exchanging part are connected to indoor heat exchanger 201 by first throttling device 202.
The refrigerant flow cycle two is connected by such as under type: the second compressor 111 connects the second liquid storage device 112, the
Two four-way valves 113 respectively with second compressor 111, the second liquid storage device 112, coupled heat exchanger 211 and the second heat exchanging part
114 one end connection, 114 other end of the second heat exchanging part are connected to coupled heat exchanger 211 by second throttling device 215；
The coupled heat exchanger 211 is connected to the first triple valve 213 by water pump 212, and the first triple valve 213 is radiated by capillary network
The second triple valve 214 is connected to after system, second triple valve 214 is connected to coupled heat exchanger 211.
Wherein, the circulating direction of refrigerant is solid arrow direction shown in Fig. 1 in refrigeration mode, is made in heating mode
The circulating direction of cryogen is dotted arrow direction shown in Fig. 1.
Embodiment 2:
As shown in Fig. 2, on the basis of 1 scheme of embodiment, between first heat exchanging part 104 and the second heat exchanging part 114
Equipped with connecting line, the connecting pipeline, which is equipped between the first heat exchanging part 104 of control and the second heat exchanging part 114, to be connected to and separates
Control valve 115；Pipeline between first heat exchanging part 104 and the first four-way valve 103 is equipped with third triple valve 116, institute
The branch C for stating third triple valve 116 is connected on the export pipeline of the second heat exchanging part 114；When the first heat exchanging part 104 and second is changed
When connecting line between hot portion 114 is connected, the branch A of the third triple valve 116 is connected with C, branch B partition；When first
When connecting line between heat exchanging part 104 and the second heat exchanging part 114 separates, the branch A of the third triple valve 116 is connected with B,
Branch C partition.System enters individually heat exchange mode, the second compressor of the heat transfer unit (HTU) 21 and outdoor unit 1 at this time
111, the second liquid storage device 112, the second four-way valve 113, the second heat exchanging part 114, the first heat exchanging part 104, control valve the 115, the 3rd 3
The connection of port valve 116 forms refrigerant flow cycle three.
The refrigerant flow cycle three is connected by such as under type: the second compressor 111 connects the second liquid storage device 112, the
Two four-way valves 113 respectively with second compressor 111, the second liquid storage device 112, coupled heat exchanger 211 and the second heat exchanging part
114 one end connection, second heat exchanging part 114 are connected to 104 one end of the first heat exchanging part by control valve 115, and described first
The heat exchanging part other end is connected to A mouthfuls of third triple valve, and B mouthfuls of the third triple valve is connected to the other end of the second heat exchanging part 114,
Second heat exchanging part, 114 other end is connected to coupled heat exchanger 211 by second throttling device 215；The coupled heat exchanger
211 are connected to the first triple valve 213 by water pump 212, and the first triple valve 213 is connected to the after capillary network radiating system
Two triple valves 214, second triple valve 214 are connected to coupled heat exchanger 211.
On the whole, this system may include but be not limited to following operational mode: quickly exchange heat mode, and individually exchange heat mode,
Keep the temperature dehumidification mode and heat preservation defrosting mode.Now it is described as follows with heat transfer unit (HTU) using the scheme of coupled heat exchanger:
Quickly exchange heat mode: a first compressor and a second compressor starts work, the first heat exchanging part and the second heat exchanging part
Between connecting line truncation, the second compressor is that coupled heat exchanger provides refrigerant, and the first compressor is indoor set heat exchanger
Refrigerant is provided, the heat transfer unit (HTU) and indoor set heat exchanger of indoor radiation are room air heat exchange simultaneously.
Individually exchange heat mode: the work of the second compressor start, the connecting line between the first heat exchanging part and the second heat exchanging part
It connects, the branch A of third triple valve is connected with C, and the second compressor provides refrigerant, the heat transfer of indoor radiation for coupled heat exchanger
Device provides duration heat exchange for room air.
Keep the temperature dehumidification mode: a first compressor and a second compressor starts work, the first heat exchanging part and the second heat exchanging part
Between connecting line truncation, the second compressor is that coupled heat exchanger provides refrigerant, and the first compressor is indoor set heat exchanger
Refrigerant is provided, setting indoor set heat exchanger evaporating temperature is lower than room air dew-point temperature, be arranged the evaporation of coupled heat exchanger/
Condensation temperature provides duration heat exchange for room air, keeps room temperature constant.
Keep the temperature defrosting mode: when system starts heat preservation defrosting mode, a first compressor and a second compressor starts work
Make, the truncation of connecting line between the first heat exchanging part and the second heat exchanging part, the second compressor and coupled heat exchanger heating operation the
One setting time, the second heat exchanging part absorb heat, while the first compressor and indoor heat exchanger defrosting the first setting time of operating,
First heat exchanging part discharges heat；Then the second compressor and coupled heat exchanger defrosting the second setting time of operating, the second heat exchanging part
Heat, while the second setting time of the first compressor and indoor heat exchanger heating operation are discharged, the first heat exchanging part absorbs heat.The
One setting time and the second setting time, which are recycled to operating to heat preservation defrosting mode, to be terminated.First setting time and second is set
Heating and Defrost operation in fixing time are controlled by control unit.
This heat preservation defrosting mode is using two compressors alternately heating-defrosting circulation.The meaning of circulation be so that
For maintaining indoor heating, another defrosts heat exchanging part one of outdoor heat exchanger for outdoor heat exchanger, for remaining outdoor
The heat exchanging part of heating is due to the internal lower meeting of refrigerant temperature so that heat exchanging part frosting, the heat exchange for outdoor heat exchanger defrosting
Portion can discharge heat and corresponding heat exchanging part surface frost layer is melted, and after cycle operation, two heat exchanging part alternately discharge heat
With absorb heat, while alternately maintaining indoor heating and outdoor defrosting, realize and indoor there is heating and outdoor uninterrupted always
The technical effect of defrosting makes room temperature keep stablizing, ensure that the comfort of user.
Particularly, the displacement of second compressor is greater than the displacement of the first compressor, described
First setting time can be greater than the second setting time.Specifically, first setting time is usually more than 5 minutes, and second
Setting time is usually more than 2 minutes；Preferably, first setting time can be set to 1 minute, the second setting time can
It is set as 30 seconds.Since the usual heat transfer area of heat transfer unit (HTU) is very big, the heat exchange amount needed is big, by the cylinder for increasing the second compressor
Swept volume can provide bigger capacity to guarantee heat transfer unit (HTU) working efficiency and stability；Again due to the second compressor air-discharging
Amount is bigger, and faster, in the second setting time, the second compressor, coupled heat exchanger and the second heat exchanging part are defrosting operating for heat exchange,
Coupled heat exchanger needs atmospheric heat in absorption chamber at this time, and since capacity is big, heat exchange area is big, heat exchange efficiency meeting
It is very high, so can quickly play the role of defrosting；In this case, allow the second setting time is relatively shorter can reduce
The room air heat sponged will not be substantially reduced to keep indoor temperature during defrosting more stable.
Further, in the second setting time, the evaporating temperature of coupled heat exchanger is not less than the dew point temperature of room air
Degree.In view of coupled heat exchanger and heat transfer element exchange heat, and heat transfer element is often laid on indoor wall or ground, once evaporation temperature
Degree is lower than the dew-point temperature of room air, and wall or ground can be made to condense, influence user experience.By by coupled heat exchanger
Evaporating temperature maintains the degree not less than room air dew-point temperature, can ensure the comfortable experience of user.
When indoor heat transfer uses capillary network radiating system, pump rotary speed is suitably reduced, is slowed down in capillary network
Water velocity.Particularly, water velocity is not more than 3 ms/h in the capillary network.When heat preservation defrosting mode operates in second
When setting time, indoor heat transfer is defrosting operating, at this time indoor heat transfer can absorption chamber self-energy, so that interior is turned cold shadow
User experience is rung, the water velocity in capillary network can be slowed down by way of suitably reducing pump rotary speed at this time, and then subtract
The heat exchange efficiency of slow water at low temperature, can reduce the fluctuation of room temperature to a certain degree in this way, ensure the comfortable experience of user.
The displacement of above-mentioned second compressor is greater than the displacement of the first compressor.Second compression
Machine is substantially heat transfer unit (HTU) service, and since heat transfer unit (HTU) is laid with indoors, heat transfer area is big, and the heat exchange amount needed is bigger,
So the larger to reach bigger capacity of the swept volume setting of the second compressor can be better ensured that heat transfer
The efficiency and stability of device work.
The foregoing is merely the preferred embodiment of the present invention, protection scope of the present invention is not limited in above-mentioned embodiment party
Formula, all technical solutions for belonging to the principle of the invention all belong to the scope of protection of the present invention.For those skilled in the art and
Speech, several improvement carried out without departing from the principles of the present invention, these improvement also should be regarded as protection model of the invention
It encloses.
Claims (10)
1. a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU), it is characterised in that: including outdoor unit
Unit, indoor unit and heat transfer unit (HTU), the outdoor unit include the first compressor, the first liquid storage device, the first four-way valve,
Second compressor, the second liquid storage device, the second four-way valve and outdoor heat exchanger, the outdoor heat exchanger include the first heat exchanging part and the
Two heat exchanging part, the indoor unit include indoor heat exchanger, the first compressor of the indoor unit and outdoor unit,
First liquid storage device, the first four-way valve, the first heat exchanging part connect to form refrigerant flow cycle one, the heat transfer unit (HTU) and outdoor unit
Second compressor of unit, the second liquid storage device, the second four-way valve, the second heat exchanging part connect to form refrigerant flow cycle two, institute
Refrigerant flow cycle one and refrigerant flow cycle two are stated respectively using one group of throttling set.
2. it is according to claim 1 a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU),
It is characterized in that: being equipped with connecting line between first heat exchanging part and the second heat exchanging part, the connecting pipeline is equipped with control the
The control valve for being connected to and separating between one heat exchanging part and the second heat exchanging part；Pipe between first heat exchanging part and the first four-way valve
Road is equipped with third triple valve, and the branch C of the third triple valve is connected on the export pipeline of the second heat exchanging part, and branch A connects
It is connected to the first heat exchanging part, branch B is connected to the first four-way valve；The third triple valve can make branch A that branch is connected or made with B
A is connected with C.
3. it is according to claim 1 or 2 a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU),
It is characterized by:
When entering quickly heat exchange mode, described a first compressor and a second compressor starts work, if this system does not include
Control valve and third triple valve, then:
Indoor radiation heat transfer device and indoor set heat exchanger are room air heat exchange simultaneously；
If this system includes control valve and third triple valve:
The control valve separates the connecting line between the first heat exchanging part and the second heat exchanging part, and the third triple valve connects branch
A and B separates branch C；Indoor radiation heat transfer device and indoor set heat exchanger are room air heat exchange simultaneously.
4. it is according to claim 2 a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU),
It is characterized in that:
When entering individually heat exchange mode, second compressor start work, the control valve connects the first heat exchanging part and the
Connecting line between two heat exchanging part, the third triple valve connect branch A and C and separate branch B；The heat transfer unit (HTU) is room
Interior air provides duration heat exchange.
5. it is according to claim 1 or 2 a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU),
It is characterized by:
When entering heat preservation dehumidification mode, described a first compressor and a second compressor starts work, if this system does not include
Control valve and third triple valve, then:
The evaporating temperature of the indoor heat exchanger is set lower than room air dew-point temperature, the evaporation/condensation of heat transfer unit (HTU) is set
Temperature keeps constant room temperature, provides duration heat exchange for room air；
If this system includes control valve and third triple valve:
The control valve separates the connecting line between the first heat exchanging part and the second heat exchanging part, and the third triple valve connects branch
A and B separates branch C；The evaporating temperature of the indoor heat exchanger is set lower than room air dew-point temperature, heat transfer unit (HTU) is set
Evaporation/condensation temperature keep constant room temperature, for room air provide duration heat exchange.
6. it is according to claim 1 or 2 a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU),
It is characterized by:
When entering heat preservation defrosting mode, a first compressor and a second compressor starts work, if this system does not include control
Valve and third triple valve, then:
The first setting time of second compressor and heat transfer unit (HTU) heating operation, the second heat exchanging part absorb heat, while first
Compressor and indoor heat exchanger defrosting the first setting time of operating, the first heat exchanging part discharge heat；The first setting time knot
The second compressor and heat transfer unit (HTU) defrosting the second setting time of operating, the second heat exchanging part discharge heat, while the first compression after beam
The second setting time of machine and indoor heat exchanger heating operation, the first heat exchanging part absorb heat；First setting time and second
Setting time circulation running to heat preservation defrosting mode terminates；
If this system includes control valve and third triple valve:
The control valve separates the connecting line between the first heat exchanging part and the second heat exchanging part, and the third triple valve connects branch
A and B separates branch C；The first setting time of second compressor and heat transfer unit (HTU) heating operation, the second heat exchanging part absorb heat
Amount, while the first compressor and indoor heat exchanger defrosting the first setting time of operating, the first heat exchanging part discharge heat；Described first
The second compressor and heat transfer unit (HTU) defrosting the second setting time of operating, the second heat exchanging part discharge heat after setting time, together
When the second setting time of the first compressor and indoor heat exchanger heating operation, the first heat exchanging part absorb heat；First setting
Time and the second setting time circulation running to heat preservation defrosting mode terminate.
7. it is according to claim 6 a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU),
It is characterized in that:
The heat transfer unit (HTU) includes coupled heat exchanger, and the displacement of second compressor is greater than the gas of the first compressor
Cylinder working volume, second setting time are greater than the first setting time.
8. it is according to claim 6 a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU),
It is characterized in that:
The heat transfer unit (HTU) includes coupled heat exchanger, and in the second setting time, the evaporating temperature of the coupled heat exchanger is not low
In the dew-point temperature of room air.
9. it is according to claim 6 a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU),
It is characterized in that:
The heat transfer unit (HTU) includes capillary network radiating system, when heat preservation defrosting mode operates in the second setting time, suitably
Pump rotary speed is reduced, water velocity in capillary network is slowed down.
10. according to claim 1 or 2 is described in any item a kind of based on the air-conditioning of double-compressor Indoor Temperature in parallel with heat transfer unit (HTU)
Control system, it is characterised in that:
The displacement of second compressor is greater than the displacement of the first compressor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443555.8A CN109357434A (en) | 2018-11-29 | 2018-11-29 | It is a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443555.8A CN109357434A (en) | 2018-11-29 | 2018-11-29 | It is a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU) |
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| CN109357434A true CN109357434A (en) | 2019-02-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087734A (en) * | 2021-11-24 | 2022-02-25 | 美的集团武汉制冷设备有限公司 | Control method, device and equipment of air conditioning system and storage medium |
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