CN106931672A - Air-conditioning evaporating pressure regulating system, adjusting method and air-conditioning system - Google Patents
Air-conditioning evaporating pressure regulating system, adjusting method and air-conditioning system Download PDFInfo
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- CN106931672A CN106931672A CN201710130951.4A CN201710130951A CN106931672A CN 106931672 A CN106931672 A CN 106931672A CN 201710130951 A CN201710130951 A CN 201710130951A CN 106931672 A CN106931672 A CN 106931672A
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- evaporator
- capillary
- branch road
- evaporating pressure
- air
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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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- 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
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
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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 air-conditioning evaporating pressure regulating system, including be sequentially communicated and formed refrigerant circulation circuit compressor, condenser and parallel connection at least two evaporator branch roads；Evaporator is respectively communicated with every evaporator branch road, capillary has been communicated with evaporator branch road described at least one, each described capillary is in parallel with the bypass line for being communicated with control valve respectively；On the evaporator branch road where each described capillary, the capillary and the bypass line are arranged at the side of the close described compressor of the evaporator.The invention also discloses a kind of air-conditioning evaporating pressure adjusting method and air-conditioning system.Technical scheme aims at each evaporating pressure difference of evaporator.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air-conditioning evaporating pressure regulating system, air-conditioning evaporating pressure
Adjusting method and air-conditioning system.
Background technology
Indoor evaporator for more than two air-conditioning system used in parallel, due to operating mode difference and user's request not
Together, it is necessary to be adjusted to the evaporating pressure of each evaporator, so that the evaporating pressure between different indoor evaporators is otherwise varied.
In the prior art, the control by controlling the aperture of the corresponding restricting element of each indoor evaporator to realize evaporating pressure.Due to
The outlet of each evaporator is joined directly together, then the outlet pressure of each evaporator is identical, if ignoring the pressure inside evaporator
Damage, then the evaporating pressure between different evaporators is very nearly the same.
The drawbacks of above-mentioned technical proposal is present is to be difficult to each steaming of evaporator by the aperture for adjusting restricting element
Hair pressure gap.
The content of the invention
It is a primary object of the present invention to provide a kind of air-conditioning evaporating pressure regulating system, it is intended to realize each evaporator
Evaporating pressure difference.
To achieve the above object, the air-conditioning evaporating pressure regulating system that the present invention is provided includes being sequentially communicated and forming refrigerant
At least two evaporator branch roads of the compressor, condenser and parallel connection of circulation loop；On every evaporator branch road respectively
Be communicated with evaporator, capillary be communicated with evaporator branch road described at least one, each described capillary respectively be communicated with
Control the bypass line of valve in parallel；On the evaporator branch road where each described capillary, the capillary and the bypass
Pipeline is arranged at the side of the close described compressor of the evaporator.
Preferably, every evaporator branch road has also been respectively communicated with restricting element, on every evaporator branch road,
The restricting element is arranged at the side of the close described condenser of the evaporator.
Preferably, the restricting element be electric expansion valve, heating power expansion valve, choke valve, control valve in any one.
Preferably, every evaporator branch road has been respectively communicated with the capillary.
Preferably, the internal diameter of each capillary is identical, and the circulation length of each capillary is identical.
Preferably, the evaporator branch road is at least three.
Preferably, the quantity of the evaporator branch road is n, and the number of capillaries on every evaporator branch road is at least
N-1, wherein, n >=3.
Additionally, to achieve the above object, the present invention also provides a kind of air-conditioning evaporating pressure adjusting method, is applied to the sky
Evaporating pressure regulating system is adjusted, the air-conditioning evaporating pressure adjusting method comprises the following steps：
When evaporating pressure regulating command is received, each described control valve is controlled to open, close or keep current shape
State, so that refrigerant produces different pressure drops on every evaporator branch road.
Preferably, the internal diameter of each capillary is identical, and the circulation length of each capillary is identical；It is described cold
Matchmaker's circulation loop includes the first evaporator branch road and the second evaporator branch road parallel with one another；The first evaporator branch road is successively
Be communicated with the first evaporator and several first capillaries, each described first capillary respectively be communicated with the first control valve
First bypass line is in parallel；The second evaporator branch road has been sequentially communicated the second evaporator and several second capillaries, often
Individual second capillary is in parallel with the second bypass line for being communicated with the second control valve respectively；
It is described when evaporating pressure regulating command is received, control each described control valve to open, close or keep current
State, so that refrigerant produces different pressure drops on every evaporator branch road, including：
When the evaporating pressure regulating command heightened in the first evaporator is received, to the described first control valve and described the
Two control valves send control instruction, so that closing number of the closing quantity of the first control valve more than the described second control valve
Amount；
When the evaporating pressure regulating command heightened in the second evaporator is received, to the described first control valve and described the
Two control valves send control instruction, so that closing number of the closing quantity of the second control valve more than the described first control valve
Amount.
Additionally, to achieve the above object, the present invention also provides a kind of air-conditioning system, including air-conditioning evaporating pressure regulation
System.
In the inventive solutions, at least two evaporator branch of parallel connection are communicated with the refrigerant circulation circuit
Road, capillary is communicated with evaporator branch road described at least one, each described capillary respectively be communicated with control valve side
Siphunculus road is in parallel；On the evaporator branch road where each described capillary, the capillary and the bypass line are arranged at
The side of the close described compressor of the evaporator；The control valve is closed, you can refrigerant is being flowed out the evaporator
Continue to be flowed out from the outlet of the capillary afterwards.Due to the capillary outlet in the evaporator branch road of closing control valve and other
The outlet of evaporator branch road, therefore, capillary outlet and other evaporator branch in the evaporator branch road of closing control valve
The evaporating pressure of the outlet on road is equal, and refrigerant flows through capillary and pressure drop can be produced to act on, so that the evaporation of closing control valve
The evaporating pressure in evaporator in device branch road will exceed the evaporator for being not turned off or being not provided with the evaporator branch road of control valve
Interior evaporating pressure, is advantageously implemented each evaporating pressure difference of evaporator.
Brief description of the drawings
Fig. 1 is the structural representation of a wherein embodiment of air-conditioning evaporating pressure regulating system of the present invention；
Fig. 2 is the structural representation of another embodiment of air-conditioning evaporating pressure regulating system of the present invention；
Fig. 3 is the schematic flow sheet of the first embodiment of air-conditioning evaporating pressure adjusting method of the present invention.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Compressor | 30 | Condenser |
| 50a | First evaporator branch road | 50b | Second evaporator branch road |
| 50c | 3rd evaporator branch road | 51a | First evaporator |
| 53a | First capillary | 55a | First bypass line |
| 57a | First control valve | 51b | Second evaporator |
| 53b | Second capillary | 55b | Second bypass line |
| 57b | Second control valve | 51c | 3rd evaporator |
| 53c | Three capillary | 55c | 3rd bypass line |
| 57c | 3rd control valve | 70 | Restricting element |
| 90 | Refrigerant pipe |
The object of the invention is realized, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Fig. 1 is referred to, to achieve the above object, the present invention provides a kind of air-conditioning evaporating pressure regulating system, including successively
Connect and formed at least two evaporator branch roads of compressor 10, condenser 30 and the parallel connection of refrigerant circulation circuit；Every institute
State and evaporator has been respectively communicated with evaporator branch road, capillary is communicated with evaporator branch road described at least one, described in each
Capillary is in parallel with the bypass line for being communicated with control valve respectively；On the evaporator branch road where each described capillary, institute
State capillary and the bypass line be arranged at the evaporator close described compressor 10 side.
In the inventive solutions, at least two evaporator branch of parallel connection are communicated with the refrigerant circulation circuit
Road, capillary is communicated with evaporator branch road described at least one, each described capillary respectively be communicated with control valve side
Siphunculus road is in parallel；On the evaporator branch road where each described capillary, the capillary and the bypass line are arranged at
The side of the close described compressor 10 of the evaporator；The control valve is closed, you can refrigerant is being flowed out the evaporation
Continue to be flowed out from the outlet of the capillary after device.Due to the capillary outlet in the evaporator branch road of closing control valve and its
The outlet of his evaporator branch road, therefore, capillary outlet and other evaporators in the evaporator branch road of closing control valve
The evaporating pressure of the outlet of branch road is equal, and refrigerant flows through capillary and pressure drop can be produced to act on, so that the steaming of closing control valve
The evaporating pressure in evaporator in hair device branch road will exceed the evaporation for being not turned off or being not provided with the evaporator branch road of control valve
Evaporating pressure in device, is advantageously implemented each evaporating pressure difference of evaporator.
The air-conditioning evaporating pressure regulating system can apply to central air conditioner system, or other need to adjust each steaming
Send out the air-conditioning system of the evaporating pressure of device.In the present invention, for the ease of introducing, hereinafter adjusted with the air-conditioning evaporating pressure
System is applied to central air conditioner system and is introduced.
The refrigerant is followed on bad loop, and each element is connected by refrigerant pipe 90.Where each described capillary
On evaporator branch road, the capillary and the bypass line are arranged at the one of the close described compressor 10 of the evaporator
Side, equivalent to the port of export that the capillary is arranged at the evaporator.The vapor pres- sure of evaporator is adjusted by capillary
Influence of the power to flowing through the cold medium flux of each evaporator is smaller, therefore, it can by adjusting each evaporating pressure of evaporator
Come in the zone of action for individually adjusting each evaporator except wet strength.Evaporating pressure in evaporator is higher, corresponding dehumidifying
Intensity is smaller, conversely, the evaporating pressure in evaporator is lower, it is corresponding except wet strength is bigger.
One air-conditioning evaporating pressure regulating system is provided with the first evaporator 51a and the second evaporator 51b of parallel connection, so that the
One evaporator 51a and the second evaporator 51b act on different regions, for example, the former acts on room A, the latter acts on room
Between B.Can be in the evaporator branch road where the evaporator branch road where the first evaporator 51a and the second evaporator 51b wherein
One of the capillary and bypass line are set, it is also possible to be respectively provided with the capillary and bypass line at both.First is steamed
The control valve on evaporator branch road where hair device 51a is closed, you can the evaporating pressure of the first evaporator 51a is adjusted into height
In the second evaporator 51b evaporating pressure (now, the second evaporator 51b can be not provided with the capillary and bypass line,
The capillary and bypass line can be set, but open the control valve on the bypass line).
For the ease of control, the control valve is preferably electrically-controlled valve.
Preferably, every evaporator branch road has also been respectively communicated with restricting element 70, in every evaporator branch road
On, the restricting element 70 is arranged at the side of the close described condenser 30 of the evaporator.
The restricting element 70 is arranged at the side of the close described condenser 30 of the evaporator, equivalent to being arranged on steaming
The arrival end of device is sent out, the restricting element 70 is used to adjust the cold medium flux for flowing through evaporator, and the throttling original paper 70 is conducive to
Individually adjust the temperature in the region that each evaporator is acted on.As the further expansion of technical scheme, one
The technical scheme of the restricting element 70 is communicated with the evaporator branch road of bar and the above, protection of the invention is included in
Within the scope of.
Preferably, the restricting element 70 be electric expansion valve, heating power expansion valve, choke valve, control valve in it is any one
Kind.
The restricting element 70 can be various, not be enumerated as limit, in this embodiment, the restricting element 70 with above-mentioned
Preferably electric expansion valve, the control accuracy of electric expansion valve is high, is advantageously implemented being precisely controlled for cold medium flux.
Preferably, every evaporator branch road has been respectively communicated with the capillary.
In order to be able to regulate and control to the evaporating pressure in every evaporator, every evaporator branch road of preferred pair is respectively provided with simultaneously
The capillary and the bypass line of connection.For example, for the first evaporator 51a and the second evaporator 51b in parallel,
The capillary and the bypass line of parallel connection are respectively provided with two evaporator branch roads, then can both have been realized the first evaporation
Evaporating pressure in device 51a adjusts the evaporating pressure in more than the second evaporator 51b, it is also possible to realize the second evaporator
Evaporating pressure in 51b adjusts the evaporating pressure in more than the first evaporator 51a.
Preferably, the internal diameter of each capillary is identical, and the circulation length of each capillary is identical.
It is certain in cold medium flux, and under conditions of the circulation equal length of capillary, the internal diameter of capillary is bigger, flows through
The pressure drop that the refrigerant of capillary is produced is smaller, conversely, the internal diameter of capillary is smaller, the pressure drop for flowing through the refrigerant generation of capillary is got over
Greatly.
It is certain in cold medium flux, and capillary internal diameter it is equal under conditions of, the circulation length of capillary is bigger, flows through
The pressure drop that the refrigerant of capillary is produced is bigger, conversely, the circulation length of capillary is smaller, flows through the pressure that the refrigerant of capillary is produced
Drop is smaller.
In order to the evaporating pressure to each evaporator is more accurately controlled, preferably make the internal diameter of each capillary
It is identical, and the circulation length of each capillary is identical.
Certainly, the circulation length of the internal diameter of each capillary, and/or each capillary, is also similarly included in
Within protection scope of the present invention.
Preferably, the evaporator branch road is at least three.
The quantity of evaporator branch road is more, and the region that can individually regulate and control is more, that is to say, that when evaporator branch road is more
When, the region quantity that central air-conditioning can be controlled individually is more.
Further, every evaporator branch road has been sequentially communicated at least two capillaries.
In the case that every evaporator branch road has been sequentially communicated at least two capillaries, due to capillary each described
It is in parallel with the bypass line for being communicated with control valve respectively, therefore, on same evaporator branch road, by closing varying number
Control valve, you can realize different degrees of pressure drop in the outlet of evaporator so that the regulation and control of evaporating pressure are more accurate.Now, together
The internal diameter of each capillary on one evaporator branch road can be with equal, it is also possible to unequal, meanwhile, same evaporator branch road
On the circulation length of each capillary can be with equal, it is also possible to it is unequal.
Further, it is equal that the number of capillaries set on every evaporator branch road is may also take in the present embodiment,
And refrigerant is in the equal technical scheme of the pressure drop that each capillary is produced, so that the regulation precision of evaporating pressure is further carried
Rise.
Refer to Fig. 2, it is preferable that the quantity of the evaporator branch road is n, the capillary on every evaporator branch road
Quantity is at least n-1, wherein, n >=3.
When evaporator branch road is three, when in capillary described in every evaporator branch road setting at least two
Guan Shi, could be adjusted to difference the evaporating pressure in each evaporator.For example, when the first evaporator 51a, the second evaporator
When 51b, the 3rd evaporator 51c are in parallel, more than two capillaries can be respectively provided with three evaporator branch roads.If desired
Realize that the evaporating pressure in the first evaporator 51a, the second evaporator 51b and the 3rd evaporator 51c is reduced successively, only need to be by three
Control valve in branch road where evaporator is closed quantity and is reduced successively.
Similarly understand, when for evaporator branch road being four, when setting at least three in every evaporator branch road
During the individual capillary, the evaporating pressure in each evaporator could be adjusted to difference.
By that analogy, it is identical in the internal diameter of each capillary, and each capillary circulation length identical
Under the conditions of, the evaporator branch road quantity is n, when every evaporator branch road sets at least n-1 capillary, ability
Evaporating pressure in each evaporator is adjusted to difference.Wherein, n >=3.
Fig. 3 is referred to, additionally, to achieve the above object, the present invention also provides a kind of air-conditioning evaporating pressure adjusting method.
In the first embodiment of the air-conditioning evaporating pressure adjusting method, the air-conditioning evaporating pressure adjusting method is applied to the air-conditioning
Evaporating pressure regulating system, the air-conditioning evaporating pressure adjusting method comprises the following steps：
Step S10, when evaporating pressure regulating command is received, controls each described control valve to open, close or keep
Current state, so that refrigerant produces different pressure drops on every evaporator branch road.
In the inventive solutions, at least two evaporator branch of parallel connection are communicated with the refrigerant circulation circuit
Road, capillary is communicated with evaporator branch road described at least one, each described capillary respectively be communicated with control valve side
Siphunculus road is in parallel；On the evaporator branch road where each described capillary, the capillary and the bypass line are arranged at
The side of the close described compressor 10 of the evaporator；The control valve is closed, you can refrigerant is being flowed out the evaporation
Continue to be flowed out from the outlet of the capillary after device.Due to the capillary outlet in the evaporator branch road of closing control valve and its
The outlet of his evaporator branch road, therefore, capillary outlet and other evaporators in the evaporator branch road of closing control valve
The evaporating pressure of the outlet of branch road is equal, and refrigerant flows through capillary and pressure drop can be produced to act on, so that the steaming of closing control valve
The evaporating pressure in evaporator in hair device branch road will exceed the evaporation for being not turned off or being not provided with the evaporator branch road of control valve
Evaporating pressure in device, is advantageously implemented each evaporating pressure difference of evaporator.
The air-conditioning evaporating pressure regulating system can apply to central air conditioner system, or other need to adjust each steaming
Send out the air-conditioning system of the evaporating pressure of device.In the present invention, for the ease of introducing, hereinafter adjusted with the air-conditioning evaporating pressure
System is applied to central air conditioner system and is introduced.
On the evaporator branch road where each described capillary, the capillary and the bypass line are arranged at described
The side of the close described compressor 10 of evaporator, equivalent to the port of export that the capillary is arranged at the evaporator.It is logical
It is smaller to adjust influence of the evaporating pressure of evaporator to flowing through the cold medium flux of each evaporator to cross capillary, therefore, it can
By adjust each evaporating pressure of evaporator come in the zone of action for individually adjusting each evaporator except wet strength.Evaporator
Interior evaporating pressure is higher, corresponding except wet strength is smaller, conversely, the evaporating pressure in evaporator is lower, corresponding dehumidifying is strong
Degree is bigger.
One air-conditioning evaporating pressure regulating system is provided with the first evaporator 51a and the second evaporator 51b of parallel connection, so that the
One evaporator 51a and the second evaporator 51b act on different regions, for example, the former acts on room A, the latter acts on room
Between B.Can be in the evaporator branch road where the evaporator branch road where the first evaporator 51a and the second evaporator 51b wherein
One of the capillary and bypass line are set, it is also possible to be respectively provided with the capillary and bypass line at both.First is steamed
The control valve on evaporator branch road where hair device 51a is closed, you can the evaporating pressure of the first evaporator 51a is adjusted into height
In the second evaporator 51b evaporating pressure (now, the second evaporator 51b can be not provided with the capillary and bypass line,
The capillary and bypass line can be set, but open the control valve on the bypass line).
For the ease of control, the control valve is preferably electrically-controlled valve.
It is readily appreciated that, when the capillary is not provided with a certain bar evaporator branch road, refrigerant is in this evaporator branch road
The pressure drop of upper generation including refrigerant flow through restricting element 70 generation pressure drop, refrigerant flow through refrigerant pipe 90 generation pressure drop, with
And refrigerant flows through the pressure drop that evaporator and other elements are produced.
Based on the first embodiment of air-conditioning evaporating pressure adjusting method of the invention, air-conditioning evaporating pressure regulation of the invention
In the second embodiment of method, the internal diameter of each capillary is identical, and the circulation length of each capillary is identical；Institute
Stating refrigerant circulation circuit includes the first evaporator branch road 50a parallel with one another and the second evaporator branch road 50b；First evaporation
Device branch road 50a has been sequentially communicated the first evaporator 51a and several first capillaries 53a, each described first capillary 53a points
It is not in parallel with the first bypass line 55a for being communicated with the first control valve 57a；The second evaporator branch road 50b has been sequentially communicated
Second evaporator 51b and several second capillaries 53b, each described second capillary 53b respectively be communicated with the second control
The second bypass line 55b of valve 57b is in parallel；
The step S10, including：
Step S11, when the evaporating pressure regulating command heightened in the first evaporator is received, to the described first control valve
Control instruction is sent with the described second control valve, so that the closing quantity of the first control valve is more than the described second control valve
Close quantity；
Step S12, when the evaporating pressure regulating command heightened in the second evaporator is received, to the described first control valve
Control instruction is sent with the described second control valve, so that the closing quantity of the second control valve is more than the described first control valve
Close quantity.
It is certain in cold medium flux, and under conditions of the circulation equal length of capillary, the internal diameter of capillary is bigger, flows through
The pressure drop that the refrigerant of capillary is produced is smaller, conversely, the internal diameter of capillary is smaller, the pressure drop for flowing through the refrigerant generation of capillary is got over
Greatly.
It is certain in cold medium flux, and capillary internal diameter it is equal under conditions of, the circulation length of capillary is bigger, flows through
The pressure drop that the refrigerant of capillary is produced is bigger, conversely, the circulation length of capillary is smaller, flows through the pressure that the refrigerant of capillary is produced
Drop is smaller.
In order to the evaporating pressure to each evaporator is more accurately controlled, preferably make the internal diameter of each capillary
It is identical, and the circulation length of each capillary is identical.
Certainly, the circulation length of the internal diameter of each capillary, and/or each capillary, is also similarly included in
Within protection scope of the present invention.
In the case that every evaporator branch road has been sequentially communicated at least two capillaries, due to capillary each described
It is in parallel with the bypass line for being communicated with control valve respectively, therefore, on same evaporator branch road, by closing varying number
Control valve, you can realize different degrees of pressure drop in the outlet of evaporator so that the regulation and control of evaporating pressure are more accurate.Now, together
The internal diameter of each capillary on one evaporator branch road can be with equal, it is also possible to unequal, meanwhile, same evaporator branch road
On the circulation length of each capillary can be with equal, it is also possible to it is unequal.
Further, it is equal that the number of capillaries set on every evaporator branch road is may also take in the present embodiment,
And refrigerant is in the equal technical scheme of the pressure drop that each capillary is produced, so that the regulation precision of evaporating pressure is further carried
Rise.
Refer to Fig. 2, it is preferable that the quantity of the evaporator branch road is n, the capillary on every evaporator branch road
Quantity is at least n-1, wherein, n >=3.
The refrigerant circulation circuit can also include the 3rd evaporator branch road 50c.The first evaporator branch road 50a, institute
State the second evaporator branch road 50b and the 3rd evaporator branch road 50c is parallel with one another；The 3rd evaporator branch road 50c connects successively
Be connected with the 3rd evaporator 51c and several three capillary 53c, each described three capillary 53c respectively be communicated with the 3rd
The 3rd bypass line 55c of control valve 57c is in parallel.
When evaporator branch road is three, when in capillary described in every evaporator branch road setting at least two
Guan Shi, could be adjusted to difference the evaporating pressure in each evaporator.For example, when the first evaporator 51a, the second evaporator
When 51b, the 3rd evaporator 51c are in parallel, more than two capillaries can be respectively provided with three evaporator branch roads.If desired
Realize that the evaporating pressure in the first evaporator 51a, the second evaporator 51b and the 3rd evaporator 51c is reduced successively, only need to be by three
Control valve in branch road where evaporator is closed quantity and is reduced successively.
Similarly understand, when for evaporator branch road being four, when setting at least three in every evaporator branch road
During the individual capillary, the evaporating pressure in each evaporator could be adjusted to difference.
By that analogy, it is identical in the internal diameter of each capillary, and each capillary circulation length identical
Under the conditions of, the evaporator branch road quantity is n, when every evaporator branch road sets at least n-1 capillary, ability
Evaporating pressure in each evaporator is adjusted to difference.Wherein, n >=3.
Additionally, to achieve the above object, the present invention also provides a kind of air-conditioning system, including air-conditioning evaporating pressure regulation
System.Whole technical schemes of above-mentioned all embodiments are employed due to this air-conditioning system, therefore at least there is above-described embodiment
All beneficial effects for being brought of technical scheme, this is no longer going to repeat them.
The preferred embodiments of the present invention are these are only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of air-conditioning evaporating pressure regulating system, it is characterised in that including being sequentially communicated and form the pressure of refrigerant circulation circuit
At least two evaporator branch roads of contracting machine, condenser and parallel connection；Evaporator has been respectively communicated with every evaporator branch road,
Be communicated with capillary on evaporator branch road described at least one, each described capillary respectively be communicated with control valve bypass pipe
Road is in parallel；On the evaporator branch road where each described capillary, the capillary and the bypass line are arranged at described
The side of the close described compressor of evaporator.
2. air-conditioning evaporating pressure regulating system according to claim 1, it is characterised in that every evaporator branch road is also
Restricting element is respectively communicated with, on every evaporator branch road, the restricting element is arranged at being close to for the evaporator
The side of the condenser.
3. air-conditioning evaporating pressure regulating system according to claim 2, it is characterised in that the restricting element is that electronics is swollen
Swollen valve, heating power expansion valve, choke valve, control valve in any one.
4. air-conditioning evaporating pressure regulating system according to claim 1, it is characterised in that every evaporator branch road point
The capillary is not communicated with.
5. air-conditioning evaporating pressure regulating system according to any one of claim 1 to 4, it is characterised in that described in each
The internal diameter of capillary is identical, and the circulation length of each capillary is identical.
6. air-conditioning evaporating pressure regulating system according to any one of claim 1 to 4, it is characterised in that the evaporation
Device branch road is at least three.
7. air-conditioning evaporating pressure regulating system according to any one of claim 1 to 4, it is characterised in that the evaporation
The quantity of device branch road is n, and the number of capillaries on every evaporator branch road is at least n-1, wherein, n >=3.
8. a kind of air-conditioning evaporating pressure adjusting method, it is characterised in that be applied to the sky any one of claim 1 to 7
Evaporating pressure regulating system is adjusted, the air-conditioning evaporating pressure adjusting method comprises the following steps：
When evaporating pressure regulating command is received, each described control valve is controlled to open, close or keep current state, with
Refrigerant is set to produce different pressure drops on every evaporator branch road.
9. air-conditioning evaporating pressure adjusting method according to claim 8, it is characterised in that the internal diameter of each capillary
It is identical, and the circulation length of each capillary is identical；The refrigerant circulation circuit includes the first evaporator parallel with one another
Branch road and the second evaporator branch road；The first evaporator branch road has been sequentially communicated the first evaporator and several first capillarys
Pipe, each described first capillary is in parallel with the first bypass line for being communicated with the first control valve respectively；Second evaporator
Branch road has been sequentially communicated the second evaporator and several second capillaries, each described second capillary respectively be communicated with second
Control the second bypass line of valve in parallel；
It is described when evaporating pressure regulating command is received, control each described control valve to open, close or keep current shape
State, so that refrigerant produces different pressure drops on every evaporator branch road, including：
When the evaporating pressure regulating command heightened in the first evaporator is received, to the described first control valve and second control
Valve processed sends control instruction, so that closing quantity of the closing quantity of the first control valve more than the described second control valve；
When the evaporating pressure regulating command heightened in the second evaporator is received, to the described first control valve and second control
Valve processed sends control instruction, so that closing quantity of the closing quantity of the second control valve more than the described first control valve.
10. a kind of air-conditioning system, it is characterised in that including the air-conditioning evaporating pressure regulation any one of claim 1 to 7
System.
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