CN107300266B - Air-conditioning system, the control method of air-conditioning system - Google Patents
Air-conditioning system, the control method of air-conditioning system Download PDFInfo
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- CN107300266B CN107300266B CN201710436273.4A CN201710436273A CN107300266B CN 107300266 B CN107300266 B CN 107300266B CN 201710436273 A CN201710436273 A CN 201710436273A CN 107300266 B CN107300266 B CN 107300266B
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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
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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
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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
- F25B41/40—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
- 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
- F25B2400/04—Refrigeration circuit bypassing means
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2101—Temperatures in a bypass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides air-conditioning system and its control methods, wherein, air-conditioning system includes electric-controlled plate and pass sequentially through connecting line and recycle compressor, outdoor heat exchanger, throttling set, the indoor heat exchanger being connected to, and outdoor heat exchanger and indoor heat exchanger respectively include at least one heat exchanging pipe, wherein, at least one heat exchange branch is respectively arranged on every heat exchanging pipe, every heat exchange branch road is provided with switch element, switch element is connected to electric-controlled plate, for controlling the on-off of corresponding heat exchange branch；And the interface of the corresponding heat exchanging pipe of every heat exchange branch is provided with the pressure sensor and temperature sensor being electrically connected with electric-controlled plate, to detect the corresponding refrigerant pressure of interface and refrigerant temperature respectively；Electric-controlled plate is configured as the switch state for the switch element being arranged on corresponding heat exchange branch road according to refrigerant pressure and refrigerant temperature control.The technical solution, can reduce the pressure loss of refrigerant, to improve the overall performance of air-conditioning system.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of air-conditioning system and a kind of control of air-conditioning system
Method.
Background technique
Currently, the heat exchanger in air-conditioning system is generally made of the heat exchange copper tube of multiple refrigerant flows, once and heat exchanger
It completes the process, then flow path form is fixed, and can not be changed, as shown in Figure 1, including two refrigerant flows.And the design of refrigerant flow
Mostly to refer to specified cooling condition ability and each flow path refrigerant exit state, for example there is certain overheat in the outlet of evaporator and exports
Temperature difference is no more than a certain range, condensator outlet have certain supercooling and outlet temperature difference is also no more than a certain range.
Generally when rated condition works, air-conditioning has preferably performance, but in sub-load especially underrun, can
Can have following situations: when the refrigerant circulation of air-conditioning system is reduced to a certain extent, refrigerant does not need away in heat exchanger
The process of evaporation or condensation can be completed in the heat exchange copper tube of complete strips flow path, but since the refrigerant flow of heat exchanger is fixed, makes
It obtains refrigerant and has to flow through remaining heat exchange copper tube, so increase the resistance of refrigerant flowing instead, reduce the whole of air-conditioning system
Body performance, is unfavorable for user experience.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, an object of the present invention is to provide a kind of new air-conditioning system, by reducing refrigerant in heat exchanger
Heat exchanging pipe in operation length improve the efficiency of air-conditioning system so as to reduce the pressure loss of refrigerant, especially work as
The overall performance that air-conditioning system is run in low- load conditions, to improve APF (the Annual Performance of air-conditioning system
Factor, annual energy consumption rate) value, promote user experience.
It is another object of the present invention to correspondences to propose a kind of control method of air-conditioning system.
To realize that at least one above-mentioned purpose proposes a kind of air-conditioning system, the sky according to the first aspect of the invention
Adjusting system includes electric-controlled plate and pass sequentially through compressor, outdoor heat exchanger, throttling set, interior that connecting line circulation is connected to and change
Hot device and the outdoor heat exchanger and the indoor heat exchanger respectively include at least one heat exchanging pipe, wherein every described
At least one heat exchange branch is respectively arranged on heat exchanging pipe, every heat exchange branch road is provided with switch element, described
Switch element is connected to the electric-controlled plate, for controlling the on-off of corresponding heat exchange branch；And every heat exchange branch with
The interface of its corresponding heat exchanging pipe is provided with the pressure sensor and temperature sensor being electrically connected with the electric-controlled plate, to divide
The corresponding refrigerant pressure of the interface and refrigerant temperature are not detected；The electric-controlled plate be configured as according to the refrigerant pressure and
The switch state of the switch element on corresponding heat exchange branch road is arranged in the refrigerant temperature control.
In the technical scheme, it is changed by the way that one or more is arranged on the original heat exchanging pipe of heat exchanger in air-conditioning system
Hot branch, and in the interface of heat exchange branch and heat exchanging pipe setting pressure sensor and temperature sensor, the stream that will test
Pressure and temperature through refrigerant when the interface is transmitted separately to the electric-controlled plate of air-conditioning system, and then electric-controlled plate can be according to refrigerant
The switch state of the switch element on corresponding heat exchange branch road is arranged in pressure and refrigerant temperature control, to control heat exchange branch
On-off, to achieve the purpose that change fixed refrigerant flow, making refrigerant that need not cover remaining all heat exchanging pipes can be complete
At heat transfer process, reduces the resistance of refrigerant flowing, improve the overall performance of air-conditioning system, especially operated in air-conditioning system low
When under load condition, to achieve the purpose that improve the APF value of air-conditioning system, user experience is promoted.
In the above-mentioned technical solutions, it is preferable that the interface of the corresponding heat exchanging pipe of every heat exchange branch is arranged
In the near exit of the corresponding heat exchanging pipe.
In the technical scheme, in order to improve pressure sensor and temperature sensor testing result accuracy and effectively
Property, near the outlet port for the heat exchanging pipe of close heat exchanger that the interface of heat exchanging pipe and heat exchange branch can be set；Into one
Step ground, when a plurality of heat exchange branch is arranged on every heat exchanging pipe, can be set in the different positions of the near exit of heat exchanging pipe
It sets, detects position and refrigerant exit position by setting many places, can effectively further improve the globality of air-conditioning system
Energy.
In any of the above-described technical solution, it is preferable that one end of every heat exchange branch is connected to corresponding interface,
The other end of every heat exchange branch is connected on the connecting line of the outlet of corresponding heat exchanging pipe.
In the technical scheme, in order to preferably reach the flow resistance for reducing refrigerant, the stream in heat exchanging pipe is reduced
The purpose of Cheng Changdu, can be by the branch that exchanges heat except being connected to its other end with the interface of heat exchanging pipe directly and heat exchanger tube
The connecting line for the air-conditioning system that the outlet on road is connected to connects, and refrigerant is directly exported heat exchanging pipe.
In any of the above-described technical solution, it is preferable that the electric-controlled plate is configured specifically are as follows: obtain and the refrigerant pressure
Corresponding refrigerant saturation temperature；Judge whether the refrigerant temperature is higher than the refrigerant saturation temperature；If so, control is arranged right
The switch element for the heat exchange branch road answered is in the open state；If it is not, the switch member on corresponding heat exchange branch road is arranged in control
Part remains off.
In the technical scheme, specifically, when electric-controlled plate determines that the refrigerant temperature that temperature sensor detects is higher than pressure
Corresponding to the refrigerant pressure that sensor detects when refrigerant saturation temperature, i.e., when air-conditioning system operates in running on the lower load,
Wherein the temperature sensor and the pressure sensor are correspondingly arranged at the interface of same heat exchanger branch and heat exchange manifold,
It controls the heat exchange branch switch element that the interface separates to open, refrigerant is exported into heat exchanging pipe, is reduced in heat exchanging pipe
Operation length, it is the phenomenon that avoiding the occurrence of overheat or supercooling, on the contrary then continue control switch element and remain off.
In any of the above-described technical solution, it is preferable that the air-conditioning system further include: four-way valve, the four-way valve are located at
In the indoor unit of the air-conditioning system or in outdoor unit；The compressor, the four-way valve, the outdoor heat exchanger, the section
Stream device passes sequentially through connecting line circulation with the indoor heat exchanger and is connected to.
In the technical scheme, by the way that four-way valve is arranged in the indoor unit or outdoor unit of air-conditioning system, make itself and compression
Machine, outdoor heat exchanger, throttling set and indoor heat exchanger circuit sequentially to be connected to by connecting line to form coolant loop, thus real
The working cycle process of existing air-conditioning system, wherein air-conditioning system refrigeration/dehumidification Working mould may be implemented by the switching of four-way valve
The switching of formula and heating operating mode.
In any of the above-described technical solution, it is preferable that the switch element includes solenoid valve；The throttling set is electronics
Expansion valve or capillary.
In the technical scheme, be arranged in switch element on heat exchange branch road can for solenoid valve, with by its with it is automatically controlled
The on-off of the corresponding heat exchange branch of electrical connection control of plate；And the throttling set of air-conditioning system both can also be with for electric expansion valve
For capillary, to realize the adjusting to the cold medium flux of air-conditioning system, to reduce the energy consumption of air-conditioning system.
According to the second aspect of the invention, it is also proposed that a kind of control method of air-conditioning system is applied to first party as above
Air-conditioning system described in any one of the technical solution in face, the control method include: to detect its place by pressure sensor
Heat exchange branch and heat exchanging pipe interface refrigerant pressure；The refrigerant temperature of the interface is detected by temperature sensor
Degree；The switch shape of switch element on the heat exchange branch road is set according to the refrigerant pressure and refrigerant temperature control
State.
In the technical scheme, it is passed by the way that the pressure of the heat exchanging pipe of air-conditioning system and the interface of heat exchange branch is arranged in
The pressure and temperature for the refrigerant that sensor and temperature sensor real-time detection flow through, and then can be according to refrigerant pressure and refrigerant temperature
The switch state of the switch element on corresponding heat exchange branch road is arranged in control, so that the on-off of heat exchange branch is controlled, to reach
Change the purpose of fixed refrigerant flow, making refrigerant that need not cover remaining all heat exchanging pipes can be completed heat transfer process, subtract
The resistance of small refrigerant flowing, improves the overall performance of air-conditioning system, especially when air-conditioning system is run in low- load conditions,
To achieve the purpose that improve the APF value of air-conditioning system, user experience is promoted.
In the above-mentioned technical solutions, it is preferable that described to be existed according to the refrigerant pressure and refrigerant temperature control setting
The step of switch state of the switch element of the heat exchange branch road includes: to obtain refrigerant saturation corresponding with the refrigerant pressure
Temperature；Judge whether the refrigerant temperature is higher than the refrigerant saturation temperature, to control the switch element according to judging result
Switch state.
In the technical scheme, the refrigerant pressure and refrigerant temperature control detected according to pressure sensor and temperature sensor
When the switch state of the switch element of the corresponding heat exchange branch road setting of system, it is first depending on refrigerant pressure and determines corresponding refrigerant
Saturation temperature is set to specifically control corresponding heat exchange branch road according to refrigerant temperature and the size comparison result of refrigerant saturation temperature
The switch state for the switch element set, unified relatively parameter improve the accuracy of the refrigerant flow switching of air-conditioning system.
In any of the above-described technical solution, it is preferable that the switch shape for controlling the switch element according to judging result
The step of state, comprising: when determining that the refrigerant temperature is higher than the refrigerant saturation temperature, control the switch element by closing
State becomes opening state；When determining that the refrigerant temperature is less than or equal to the refrigerant saturation temperature, the switch is controlled
Element remains off constant.
In the technical scheme, when the refrigerant temperature that judgement temperature sensor detects is examined higher than corresponding pressure sensor
When the matched refrigerant saturation temperature of refrigerant pressure institute measured, i.e., when air-conditioning system operates in running on the lower load, control is corresponded to
The switch element of heat exchange branch road open, refrigerant is exported into heat exchanging pipe, the operation length in heat exchanging pipe is reduced, keeps away
Exempt from the phenomenon that occurring overheating or being subcooled, it is on the contrary then continue control switch element and remain off.
In any of the above-described technical solution, it is preferable that passing through the pressure sensor and the temperature sensor respectively
Before the refrigerant pressure and the refrigerant temperature that detect the interface, further includes: establish and store the refrigerant pressure with it is described cold
One-to-one relationship between matchmaker's saturation temperature.
In the technical scheme, the refrigerant arrived according to pressure sensor and temperature sensor real-time detection is ensured that
Pressure and refrigerant temperature control switching refrigerant flow, can pre-establish and store between refrigerant pressure and refrigerant saturation temperature
One-to-one relationship further increases the overall performance of air-conditioning system to improve the operational efficiency of air-conditioning system.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic diagram of the heat exchanging pipe of heat exchanger in the related technology；
Fig. 2 shows the schematic diagrames of the air-conditioning system of the embodiment of the present invention；
Fig. 3 shows the schematic diagram of the heat exchanging pipe of the heat exchanger of the embodiment of the present invention；
Fig. 4 shows the flow diagram of the control method of the air-conditioning system of the embodiment of the present invention；
Fig. 5 shows the control of the switch state of the switch element of the heat exchange branch road of the air-conditioning system of the embodiment of the present invention
Method flow schematic diagram processed.
Wherein, the appended drawing reference in Fig. 2 and Fig. 3 and the corresponding relationship between component names are as follows:
10 compressors, 20 outdoor heat exchangers, 30 throttling sets, 40 indoor heat exchangers, 50 four-way valves, 60 heat exchanging pipes, 70
Exchange heat branch, 80 switch elements, 90 pressure sensors, 100 temperature sensors.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
It is specifically described below with reference to air-conditioning system of the Fig. 2 and Fig. 3 to the embodiment of the present invention.
The air-conditioning system of embodiment according to the present invention, comprising: electric-controlled plate, and connecting line is passed sequentially through as shown in Figure 2
Recycle compressor 10, four-way valve 50, outdoor heat exchanger 20, throttling set 30 and the indoor heat exchanger 40 of connection, wherein described four
Port valve 50 is located in the indoor unit of the air-conditioning system or in outdoor unit, by the indoor unit or outdoor unit of air-conditioning system
Four-way valve 50 is set, it is made to pass through connecting line with compressor 10, outdoor heat exchanger 20, throttling set 30 and indoor heat exchanger 40
It circuits sequentially connection and forms coolant loop, to realize the working cycle process of air-conditioning system, wherein pass through cutting for four-way valve 50
Change the switching that air-conditioning system refrigeration/dehumidification operating mode may be implemented and heat operating mode.
Further, in the above-described embodiments, the throttling set 30 is electric expansion valve or capillary.
It is understood that the throttling set 30 of air-conditioning system both can may be capillary for electric expansion valve, with
The adjusting to the cold medium flux of air-conditioning system is realized, to reduce the energy consumption of air-conditioning system.
Further, in any of the above-described embodiment, the air-conditioning system further includes opposite with the indoor heat exchanger 40
The indoor fan of setting and the outdoor fan being oppositely arranged with the outdoor heat exchanger 20.
Further, in any of the above-described embodiment, the outdoor heat exchanger 20 and the indoor heat exchanger 40 wrap respectively
Include at least one heat exchanging pipe 60, wherein at least one heat exchange branch 70, institute are respectively arranged on every heat exchanging pipe 60
It states and is provided with switch element 80 on every heat exchange branch 70, the switch element 80 is connected to the electric-controlled plate, for controlling
The on-off of corresponding heat exchange branch 70；And the interface setting of the corresponding heat exchanging pipe 60 of every heat exchange branch 70
There are the pressure sensor 90 and temperature sensor 100 being electrically connected with the electric-controlled plate, it is corresponding to detect the interface respectively
Refrigerant pressure and refrigerant temperature；The electric-controlled plate is configured as being existed according to the refrigerant pressure and refrigerant temperature control setting
The switch state of switch element 80 on corresponding heat exchange branch 70.
Specifically, as shown in figure 3, the heat exchanging pipe 60 of indoor heat exchanger 40 or outdoor heat exchanger 20 composition embodiment it
One, wherein heat exchanger includes two heat exchanging pipes 60, wherein being provided with two heat exchange branches 70 on a heat exchanging pipe 60, separately
One heat exchanging pipe 60 is provided with a heat exchange branch 70.
In this embodiment, it is changed by the way that one or more is arranged on the original heat exchanging pipe 60 of heat exchanger in air-conditioning system
Hot branch 70, and in the interface of heat exchange branch 70 and heat exchanging pipe 60 setting pressure sensor 90 and temperature sensor 100, it will
The pressure and temperature of refrigerant when flowing through the interface detected is transmitted separately to the electric-controlled plate of air-conditioning system, and then electric-controlled plate can
Switch state with the switch element 80 being arranged on corresponding heat exchange branch 70 according to refrigerant pressure and refrigerant temperature control, from
And the on-off of heat exchange branch 70 is controlled, to achieve the purpose that change fixed refrigerant flow, make refrigerant that need not cover remaining institute
There is heat exchanging pipe 60 that heat transfer process can be completed, reduces the resistance of refrigerant flowing, improve the overall performance of air-conditioning system, especially
When air-conditioning system is run in low- load conditions, to achieve the purpose that improve the APF value of air-conditioning system, user's body is promoted
It tests.
Further, in the above-described embodiments, as shown in figure 3, the corresponding heat exchanger tube of every heat exchange branch 70
The near exit of the corresponding heat exchanging pipe 60 is arranged in the interface on road 60.
In this embodiment, in order to improve 100 testing result of pressure sensor 90 and temperature sensor accuracy and have
The outlet port of the heat exchanging pipe 60 for the close heat exchanger that the interface of effect property, heat exchanging pipe 60 and heat exchange branch 70 can be set is attached
Closely；Further, it when a plurality of heat exchange branch 70 is arranged on every heat exchanging pipe 60, can be set in the outlet of heat exchanging pipe 60
Neighbouring different location detects position and refrigerant exit position by setting many places, can effectively further improve air-conditioning
The overall performance of system.
Further, in the above-described embodiments, as shown in figure 3, one end of every heat exchange branch 70 is connected to correspondence
Interface, the other end of every heat exchange branch 70 is connected to the described of the outlet of corresponding heat exchanging pipe 60
On connecting line.
In this embodiment, in order to preferably reach the flow resistance for reducing refrigerant, the stream in heat exchanging pipe 60 is reduced
The purpose of Cheng Changdu, can by the branch 70 that exchanges heat except be connected to its other end with the interface of heat exchanging pipe 60 directly with change
The connecting line for the air-conditioning system that the outlet of pipe line 60 is connected to connects, and refrigerant is directly exported heat exchanging pipe 60.
Further, in any of the above-described embodiment, the electric-controlled plate is configured specifically are as follows: is obtained and the refrigerant pressure
Corresponding refrigerant saturation temperature；Judge whether the refrigerant temperature is higher than the refrigerant saturation temperature；If so, control is arranged right
The switch element 80 on heat exchange branch 70 answered is in the open state；If it is not, control is arranged on corresponding heat exchange branch 70
Switch element 80 remains off.
In this embodiment, specifically, when electric-controlled plate determines that the refrigerant temperature that temperature sensor 100 detects is higher than pressure
Corresponding to the refrigerant pressure that sensor 90 detects when refrigerant saturation temperature, i.e., when air-conditioning system operates in running on the lower load
When, wherein the temperature sensor 100 and the pressure sensor 90 are correspondingly arranged at the same heat exchanger branch and heat exchange manifold
Interface, control 70 switch element 80 of heat exchange branch that the interface separates and open, refrigerant is exported into heat exchanging pipe 60, is subtracted
Few operation length in heat exchanging pipe 60, it is the phenomenon that avoiding the occurrence of overheat or supercooling, on the contrary then continue control switch element 80
It remains off.
Air-conditioning described in any one of above-described embodiment is applied to the embodiment of the present invention below with reference to Fig. 4 and Fig. 5
The control method of system is specifically described.
As shown in figure 4, the control method of the air-conditioning system of embodiment according to the present invention, specifically includes following below scheme step
It is rapid:
Step S40 detects the refrigerant pressure of the interface of exchange heat branch and the heat exchanging pipe where it by pressure sensor
Power.
Step S42 detects the refrigerant temperature of the interface by temperature sensor.
The switch on the heat exchange branch road is arranged according to the refrigerant pressure and refrigerant temperature control in step S44
The switch state of element.
In this embodiment, by be arranged in air-conditioning system heat exchanging pipe and heat exchange branch interface pressure sensing
The pressure and temperature for the refrigerant that device and temperature sensor real-time detection flow through, and then can be according to refrigerant pressure and refrigerant temperature control
Set up set it is corresponding heat exchange branch road on switch element switch state, thus control heat exchange branch on-off, changed with reaching
Become the purpose of fixed refrigerant flow, making refrigerant that need not cover remaining all heat exchanging pipes can be completed heat transfer process, reduce
The resistance of refrigerant flowing, improves the overall performance of air-conditioning system, especially when air-conditioning system is run in low- load conditions, with
Phase achievees the purpose that the APF value for improving air-conditioning system, promotes user experience.
Further, as shown in figure 5, the step S44 in above-described embodiment can specifically be executed are as follows:
Step S50 obtains refrigerant saturation temperature corresponding with the refrigerant pressure.
Step S52, judges whether the refrigerant temperature is higher than the refrigerant saturation temperature.
The corresponding heat exchange branch of refrigerant pressure and refrigerant temperature control detected according to pressure sensor and temperature sensor
When the switch state of the switch element of upper setting, it is first depending on refrigerant pressure and determines corresponding refrigerant saturation temperature, thus
The switch element of corresponding heat exchange branch road setting is specifically controlled according to refrigerant temperature and the size comparison result of refrigerant saturation temperature
Switch state, unified relatively parameter improves the accuracy of the refrigerant flow switching of air-conditioning system.
Further, the switch state of the switch element is controlled according to the judging result of above-mentioned steps S52, if specifically
It is determined as being to then follow the steps S54, it is no to then follow the steps S56, it may be assumed that
Step S54, controlling the switch element from closed state becomes opening state.
Step S56, control the switch element remain off it is constant.
In this embodiment, when the refrigerant temperature that judgement temperature sensor detects is detected higher than corresponding pressure sensor
When the matched refrigerant saturation temperature of refrigerant pressure institute arrived, i.e., when air-conditioning system operates in running on the lower load, control corresponding
The switch element of heat exchange branch road is opened, and refrigerant is exported heat exchanging pipe, the operation length in heat exchanging pipe is reduced, avoids
It is appearance the phenomenon that overheating or being subcooled, on the contrary then continue control switch element and remain off.
Further, in any of the above-described embodiment, before the step S40, the control method of the air-conditioning system
It can also include: foundation and store the one-to-one relationship between the refrigerant pressure and the refrigerant saturation temperature.
In this embodiment, the refrigerant pressure arrived according to pressure sensor and temperature sensor real-time detection is ensured that
Power and refrigerant temperature control switching refrigerant flow, can pre-establish and store one between refrigerant pressure and refrigerant saturation temperature
One corresponding relationship further increases the overall performance of air-conditioning system to improve the operational efficiency of air-conditioning system.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, by reducing refrigerant in the heat exchanging pipe of heat exchanger
Interior operation length improves the efficiency of air-conditioning system so as to reduce the pressure loss of refrigerant, especially when air-conditioning system exists
The overall performance run under running on the lower load promotes user experience to improve the APF value of air-conditioning system.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of air-conditioning system, the air-conditioning system include electric-controlled plate with pass sequentially through compressor that connecting line circulation is connected to,
Outdoor heat exchanger, throttling set, indoor heat exchanger, the outdoor heat exchanger and the indoor heat exchanger respectively include at least one
Heat exchanging pipe, which is characterized in that
At least one heat exchange branch is respectively arranged on every heat exchanging pipe, every heat exchange branch road is provided with out
Element is closed, the switch element is connected to the electric-controlled plate, for controlling the on-off of corresponding heat exchange branch；And
The interface of the corresponding heat exchanging pipe of every heat exchange branch is provided with the pressure being electrically connected with the electric-controlled plate
Sensor and temperature sensor, to detect the corresponding refrigerant pressure of the interface and refrigerant temperature respectively；
The electric-controlled plate is configured as being arranged according to the refrigerant pressure and refrigerant temperature control in corresponding heat exchange branch
On switch element switch state.
2. air-conditioning system according to claim 1, which is characterized in that the corresponding heat exchanger tube of every heat exchange branch
The near exit of the corresponding heat exchanging pipe is arranged in the interface on road.
3. air-conditioning system according to claim 2, which is characterized in that one end of every heat exchange branch is connected to correspondence
Interface, every it is described heat exchange branch the other end be connected to corresponding heat exchanging pipe outlet the connection
On pipeline.
4. air-conditioning system according to claim 1, which is characterized in that the electric-controlled plate is configured specifically are as follows:
Obtain refrigerant saturation temperature corresponding with the refrigerant pressure；
Judge whether the refrigerant temperature is higher than the refrigerant saturation temperature；
If so, the switch element that control is arranged on corresponding heat exchange branch road is in the open state；
If it is not, the switch element that control is arranged on corresponding heat exchange branch road remains off.
5. air-conditioning system according to any one of claim 1 to 4, which is characterized in that further include: four-way valve, described four
Port valve is located in the indoor unit of the air-conditioning system or in outdoor unit；
The compressor, the four-way valve, the outdoor heat exchanger, the throttling set and the indoor heat exchanger pass sequentially through
Connecting line circulation connection.
6. air-conditioning system according to any one of claim 1 to 4, which is characterized in that
The switch element includes solenoid valve；
The throttling set is electric expansion valve or capillary.
7. a kind of control method of air-conditioning system, which is characterized in that be applied to the air-conditioning as described in any one of claims 1 to 6
System, the control method include:
The refrigerant pressure of the interface of exchange heat branch and the heat exchanging pipe where it is detected by pressure sensor；
The refrigerant temperature of the interface is detected by temperature sensor；
The switch shape of switch element on the heat exchange branch road is set according to the refrigerant pressure and refrigerant temperature control
State.
8. control method according to claim 7, which is characterized in that described according to the refrigerant pressure and the refrigerant temperature
Spending the step of switch state of the switch element on branch road that exchanges heat is arranged in control includes:
Obtain refrigerant saturation temperature corresponding with the refrigerant pressure；
Judge whether the refrigerant temperature is higher than the refrigerant saturation temperature, to control the switch element according to judging result
Switch state.
9. control method according to claim 8, which is characterized in that described to control the switch element according to judging result
Switch state the step of, comprising:
When determining that the refrigerant temperature is higher than the refrigerant saturation temperature, control the switch element is become beating from closed state
Open state；
When determining that the refrigerant temperature is less than or equal to the refrigerant saturation temperature, controls the switch element and remain turned-off shape
State is constant.
10. control method according to claim 8 or claim 9, which is characterized in that passing through the pressure sensor and institute respectively
Before stating refrigerant pressure and the refrigerant temperature that temperature sensor detects the interface, further includes:
Establish and store the one-to-one relationship between the refrigerant pressure and the refrigerant saturation temperature.
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| CN112856566B (en) * | 2021-01-27 | 2023-03-10 | 光控特斯联(重庆)信息技术有限公司 | Intelligent heating system and method for intelligent community |
| CN113645809B (en) * | 2021-08-13 | 2024-03-12 | 深圳麦克维尔空调有限公司 | Cooling device, air conditioning system, and control method for cooling device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193757A (en) * | 1995-01-19 | 1996-07-30 | Sanden Corp | Freezer device |
| CN104110776A (en) * | 2013-09-29 | 2014-10-22 | 美的集团股份有限公司 | Air conditioning system and control method thereof |
| CN203907965U (en) * | 2014-04-30 | 2014-10-29 | 广东美的集团芜湖制冷设备有限公司 | An air-conditioner heat exchange system |
| CN105066538A (en) * | 2015-07-15 | 2015-11-18 | 广东美的暖通设备有限公司 | Air supplying and enthalpy increasing method and system for air conditioner, and air conditioner |
| CN105841254A (en) * | 2015-01-29 | 2016-08-10 | 富士通将军股份有限公司 | Outdoor unit of air conditioner and air conditioner |
| CN205980183U (en) * | 2015-04-17 | 2017-02-22 | 三菱电机株式会社 | Air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050023758A (en) * | 2003-09-02 | 2005-03-10 | 엘지전자 주식회사 | Condenser |
-
2017
- 2017-06-12 CN CN201710436273.4A patent/CN107300266B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193757A (en) * | 1995-01-19 | 1996-07-30 | Sanden Corp | Freezer device |
| CN104110776A (en) * | 2013-09-29 | 2014-10-22 | 美的集团股份有限公司 | Air conditioning system and control method thereof |
| CN203907965U (en) * | 2014-04-30 | 2014-10-29 | 广东美的集团芜湖制冷设备有限公司 | An air-conditioner heat exchange system |
| CN105841254A (en) * | 2015-01-29 | 2016-08-10 | 富士通将军股份有限公司 | Outdoor unit of air conditioner and air conditioner |
| CN205980183U (en) * | 2015-04-17 | 2017-02-22 | 三菱电机株式会社 | Air conditioner |
| CN105066538A (en) * | 2015-07-15 | 2015-11-18 | 广东美的暖通设备有限公司 | Air supplying and enthalpy increasing method and system for air conditioner, and air conditioner |
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