CN106196430A - Fixed frequency air conditioner adjusts the system and method for refrigerating capacity automatically - Google Patents
Fixed frequency air conditioner adjusts the system and method for refrigerating capacity automatically Download PDFInfo
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- CN106196430A CN106196430A CN201610515226.4A CN201610515226A CN106196430A CN 106196430 A CN106196430 A CN 106196430A CN 201610515226 A CN201610515226 A CN 201610515226A CN 106196430 A CN106196430 A CN 106196430A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to a kind of method that fixed frequency air conditioner adjusts refrigerating capacity automatically, including step: 1) detection vaporizer position return air temperature；2) when described return air temperature is more than preset temperature, condensator outlet the coolant flowed out all carries out heat exchange through described vaporizer；When described return air temperature is not more than preset temperature, the outlet of condenser the coolant part flowed out carries out heat exchange through described vaporizer, and remainder coolant returns to compressor after avoiding described vaporizer and being evaporated to gaseous state；Or, condensator outlet the coolant flowed out returns to compressor after all avoiding described vaporizer and being evaporated to gaseous state.The method is under non-stop-machine premise, it is achieved that fixed frequency air conditioner adjusts refrigerating capacity automatically, it is to avoid situation about colding and heat succeed each other occurs, improves comfortableness, and effectively extends the service life of compressor.The invention also discloses a kind of fixed frequency air conditioner being capable of said method and automatically adjust the system of refrigerating capacity.
Description
Technical field
The present invention relates to air-conditioning manufacturing technology field, especially relate to a kind of fixed frequency air conditioner and automatically adjust the system of refrigerating capacity
And method.
Background technology
So-called fixed frequency air conditioner is exactly a kind of unit for processing air temperature variations to area of space offer, electricity of registering one's residence
Pressure and frequency of supply are constant, and owing to frequency of supply is constant, thus the rotating speed of the compressor of fixed frequency air conditioner is basically unchanged, this kind
Air-conditioning is currently the ambient temperature relying on continuous "ON", " stopping " machine to adjust indoor.
But, rely on "ON", " stopping " machine to be frequently adjusted indoor environment temperature causing cold and heat succeed each other to show
As, comfortableness is relatively low, and the service life of compressor also can be had a negative impact and reduce whole by "ON", " stopping " machine frequently
The efficiency of machine.
Therefore, how invariable frequency compressor can realize the adjustment of indoor environment temperature in the case of non-stop-machine, to improve
Comfortableness to extend service life of compressor be that current those skilled in the art need badly and solve the technical problem that.
Summary of the invention
An object of the present invention is to provide a kind of method that fixed frequency air conditioner adjusts refrigerating capacity automatically, so as to do not stopping
In the case of machine, it is achieved the fixed frequency air conditioner regulation to indoor environment temperature, while improving comfortableness, extend making of compressor
Use the life-span.
Another object of the present invention also resides in the system providing a kind of fixed frequency air conditioner automatically to adjust refrigerating capacity.
For reaching above-mentioned purpose, fixed frequency air conditioner provided by the present invention adjusts the method for refrigerating capacity automatically, including step:
1) return air temperature of vaporizer position is detected；
2) when described return air temperature is more than preset temperature, condensator outlet the coolant flowed out is all through described evaporation
Device carries out heat exchange；When described return air temperature is not more than preset temperature, the outlet of condenser the coolant part flowed out is passed through
Described vaporizer carries out heat exchange, and remainder coolant returns to compressor after avoiding described vaporizer and being evaporated to gaseous state；Or, by
The coolant that condensator outlet flows out returns to compressor after all avoiding described vaporizer and being evaporated to gaseous state.
Preferably, in the case of described return air temperature is not more than described preset temperature, and temperature gap is at 0 DEG C-2 DEG C
Time, described condensator outlet the coolant half flowed out flows through described vaporizer, and second half is avoided described vaporizer and is evaporated to
Described compressor is returned to after gaseous state.
Preferably, in the case of described return air temperature is not more than described preset temperature, and when temperature gap is more than 2 DEG C,
The coolant flowed out by condensator outlet returns to compressor after all avoiding described vaporizer and being evaporated to gaseous state.
Fixed frequency air conditioner provided in the present invention adjusts in the method for refrigerating capacity automatically, not up to presets temperature at room air
When spending, vaporizer the coolant flowed out all carries out heat exchange through vaporizer, in order to reach preset temperature as early as possible；And work as Interior Space
When gas reaches or is less than preset temperature, the outlet of condenser only some carries out heat exchange through vaporizer to the coolant flowed out,
And remainder coolant avoid can vaporizer returned to compressor after being evaporated to gaseous state；Or the coolant flowed out by condenser is complete
Portion returns to compressor after avoiding vaporizer and being evaporated to gaseous state, and the coolant flowing through vaporizer reduces the refrigeration it also reducing indoor
Amount, thus avoid indoor temperature to reduce further, it is ensured that indoor temperature maintains near preset temperature value.
Visible, under non-stop-machine premise, this kind of method achieves fixed frequency air conditioner and automatically adjusts refrigerating capacity, it is to avoid cold and hot
Situation alternately occurs, improves comfortableness, and effectively extends the service life of compressor.
The fixed frequency air conditioner that disclosed in this invention automatically is adjusted the system of refrigerating capacity and includes being sequentially connected in series into back by pipeline
The compressor on road, condenser, throttling arrangement and vaporizer, also include:
It is arranged on the subcooler between described condenser and described throttling arrangement, in described subcooler, includes mutual heat exchange
First flow path and second flow path, the drain pipe road between described condenser with described throttling arrangement connects with described first flow path,
Return line between described vaporizer with described compressor connects with described second flow path；
One end connects with described drain pipe road, the adjustment branch road that the other end connects with described return line；
The return air temperature sensor arranged near the return air position of described vaporizer；
It is arranged on the evaporating pressure regulating valve in described return line；
It is arranged on the electromagnetic valve on described adjustment branch road；
Controller, when described return air temperature is more than preset temperature, described controller controls described evaporating pressure regulating valve
Standard-sized sheet, and the described controller described closed electromagnetic valve of control；When described return air temperature is not more than described preset temperature, controller
Control described evaporating pressure regulating valve aperture to reduce or fully closed, and described controller controls described electromagnetic valve and opens.
Preferably, also include being arranged on described adjustment branch road, and be positioned at the hydrojet electromagnetic valve after described electromagnetic valve, and
Described hydrojet electromagnetic valve is Tong Bu with described electromagnetic valve to be opened and closed.
Preferably, also include:
It is arranged on the suction temperature sensor of described compressor air suction mouth position；
One end connects with the air vent of described compressor, the bypass branch that the other end connects with described return line；
It is arranged on the bypass regulator valve on described bypass branch, and in the temperature of described suction temperature sensor less than presetting
During suction temperature, described controller controls described bypass regulator valve and opens；Temperature at described air suction sensor is not less than described
When presetting suction temperature, described controller controls described bypass regulator valve and cuts out.
Preferably, described subcooler is bushing type subcooler, and described bushing type subcooler includes the internal layer that diameter is less
Sleeve pipe, and the outer layer sleeve being relatively large in diameter, described inner layer sleeve constitutes described first flow path, described inner layer sleeve and described outer layer
The gap of sleeve pipe constitutes described second flow path.
Preferably, described subcooler includes that outer casing and internal layer pipeline, described internal layer pipeline dish in the shape of a spiral are located at institute
State in outer casing, and described internal layer pipeline constitutes described first flow path, between described internal layer pipeline and described outer casing
Gap constitutes described second flow path.
Preferably, in the case of described return air temperature is not more than described preset temperature, and temperature gap is at 0 DEG C-2 DEG C
Time, described controller controls the aperture of described evaporating pressure regulating valve and reduces.
Preferably, in the case of return air temperature described in place is not more than described preset temperature, and temperature gap is more than 2 DEG C
Time, it is fully closed that described controller controls described evaporating pressure regulating valve.
As can be seen from the above technical solutions, fixed frequency air conditioner disclosed in this invention adjusts in cooling capacity systems automatically,
It is provided with subcooler between condenser and choke valve, in subcooler, is provided with first flow and the second flow path of mutual heat exchange, the
One flow is connected with the drain pipe road between condenser and throttling arrangement, the return-air between second flow and vaporizer and compressor
Pipeline is connected, and adjusts branch road one end and connects with drain pipe road, and the other end connects with return line, and return air temperature sensor is used for examining
Survey time air temperature, when return air temperature is more than preset temperature, controller controls evaporating pressure regulating valve standard-sized sheet, thus ensures all
Coolant all carries out heat exchange through vaporizer；And when return air temperature is not more than preset temperature, controller controls pressure-regulating valve
Aperture reduces or fully closed, meanwhile, opens the electromagnetic valve adjusted on branch road, after the most some or all of coolant is flowed out by condenser
To enter subcooler by adjusting branch road, return to compressor after being evaporated to gaseous state in subcooler, this can reduce and flows through evaporation
The coolant of device, thus reduce the refrigerating capacity of indoor, it is to avoid indoor temperature reduces further, it is ensured that indoor temperature maintains presets temperature
Near angle value.
Visible, under non-stop-machine premise, this kind of system also achieves fixed frequency air conditioner and automatically adjusts refrigerating capacity, it is to avoid cold
Heat situation alternately occurs, improves comfortableness, and effectively extends the service life of compressor.
Accompanying drawing explanation
The fixed frequency air conditioner that Fig. 1 is disclosed in the embodiment of the present invention adjusts the overall structure signal of the system of refrigerating capacity automatically
Figure；
The fixed frequency air conditioner that Fig. 2 is disclosed in the embodiment of the present invention automatically adjusts the system of refrigerating capacity and regulates at evaporating pressure
Refrigerant circulation schematic diagram during valve standard-sized sheet；
The fixed frequency air conditioner that Fig. 3 is disclosed in the embodiment of the present invention automatically adjusts the system of refrigerating capacity and regulates at evaporating pressure
Refrigerant circulation schematic diagram when valve opening reduces；
The fixed frequency air conditioner that Fig. 4 is disclosed in the embodiment of the present invention automatically adjusts the system of refrigerating capacity and regulates at evaporating pressure
Refrigerant circulation schematic diagram when valve is fully closed；
Fig. 5 is the structural representation of subcooler disclosed in an embodiment of the present invention；
Fig. 6 is the structural representation of subcooler disclosed in another kind embodiment of the present invention.
Wherein, 1 is compressor, and 2 is condenser, and 3 is throttling arrangement, and 4 is vaporizer, and 5 is subcooler, and 6 is return air temperature
Sensor, 7 is evaporating pressure regulating valve, and 8 is electromagnetic valve, and 9 is hydrojet electromagnetic valve, and 10 is drain pipe road, and 11 is return line, 12
For adjusting branch road, 13 is bypass regulator valve, and 14 is suction temperature sensor, and 15 is outdoor fan, and 16 is indoor fan, and 17 are back
Wind, 18 is air-out.
Detailed description of the invention
One of core of the present invention is to provide a kind of method that fixed frequency air conditioner adjusts refrigerating capacity automatically, so as to do not stopping
In the case of machine, it is achieved the fixed frequency air conditioner regulation to indoor environment temperature, while improving comfortableness, extend making of compressor
Use the life-span.
Another core of the present invention also resides in the system providing a kind of fixed frequency air conditioner automatically to adjust refrigerating capacity.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings and detailed description of the invention
The present invention is described in further detail.
The method that fixed frequency disclosed in this invention adjusts refrigerating capacity automatically, comprises the following steps:
1) return air temperature of vaporizer 4 position is detected；
Due to temperature value current in return air temperature agent's room, thus return air temperature is carried out detection and can know and work as cup
Interior temperature；
2) when when return air temperature is more than preset temperature, condenser 2 coolant exporting outflow all enters through vaporizer 4
Row heat exchange；When return air temperature is not more than preset temperature, the outlet of condenser 2 the coolant part flowed out is through vaporizer 4
Carrying out heat exchange, remainder coolant returns to compressor 1 after avoiding vaporizer 4 and being evaporated to gaseous state；Or, condenser 2 export
The coolant flowed out returns to compressor 1 after all avoiding described vaporizer 4 and being evaporated to gaseous state.
In embodiments of the present invention, preset temperature be it is intended that or set Indoor Temperature angle value, if return air temperature is more than
Preset temperature, illustrates that the air themperature of indoor is the highest, is also not reaching to expectation or the temperature value set, now still needs to the greatest extent
Fast refrigeration, to ensure that indoor temperature reaches desired value (preset temperature) as early as possible, and whole coolant all steams through vaporizer 4
Sending out heat absorption, this just takes full advantage of the refrigerating capacity of air-conditioning, so that indoor temperature reaches desired value as early as possible；
If return air temperature is not more than preset temperature, illustrate that indoor temperature now has reached even less than desired value, empty
Adjust refrigerating capacity without continue all of, it is only necessary to utilize a part of refrigerating capacity or all do not recycle, now, by cold
The coolant part that the outlet of condenser 2 is flowed out carries out heat exchange through vaporizer 4, and after remaining part avoids vaporizer 4, and steam
Sending out and become gaseous state and return to compressor 1, only some absorbs heat coolant through vaporizer 4, this reduces the refrigeration of air-conditioning
Amount, thus prevent indoor temperature from continuing to decline；If the coolant being exported outflow by condenser 2 is all avoided vaporizer 4 and is evaporated to
Returning to compressor 1 after gaseous state, then vaporizer 4 part will no longer be freezed, this also avoids indoor temperature and continues to decline, it is ensured that
Indoor temperature maintains near desired value.
Visible, under non-stop-machine premise, method disclosed in above-described embodiment achieves fixed frequency air conditioner and automatically adjusts
Refrigerating capacity, it is to avoid situation about colding and heat succeed each other occurs, improves comfortableness, and effectively extends the service life of compressor 1.
It is true that if return air temperature reaches or slightly less than preset temperature time, it is still desirable to have part coolant to flow through vaporizer
4, in order to maintain indoor temperature, through research, when the difference of return air temperature and preset temperature is 0 DEG C-2 DEG C (including endpoint value)
Time, condenser 2 coolant exporting outflow has half to flow through vaporizer 4, and second half returns after avoiding vaporizer 4 and being evaporated to gaseous state
The most suitable to compressor 1；And when return air temperature is too low, it is necessary to temporarily cease the heat absorption function of vaporizer 4, in order to Indoor Temperature
Degree gos up near preset temperature, through research, when the difference of return air temperature with preset temperature is more than 2 DEG C, condenser 2 goes out
It is the most suitable that the coolant that mouth flows out returns to compressor 1 after all avoiding described vaporizer 4 and being evaporated to gaseous state.
In addition, also disclosing a kind of fixed frequency air conditioner in the embodiment of the present invention and automatically adjust the system of refrigerating capacity, this is
System includes being sequentially connected in series becomes the compressor 1 in loop, condenser 2, throttling arrangement 3 and vaporizer 4, wherein condenser 2 and pressure
The air vent of contracting machine 1 connects, and vaporizer 4 connects with the air entry of compressor 1, and this system also includes with lower component:
The subcooler 5 being arranged between condenser 2 and described throttling arrangement 3, includes exchanging mutually in this subcooler 5
The first flow path of heat and second flow path, the pipeline between condenser 2 and throttling arrangement 3 is referred to as drain pipe road 10, drain pipe road 10
Connecting with first flow path, the pipeline between vaporizer 4 and compressor 1 is referred to as return line 11, return line 11 and second flow path
Connection；
One end connects with drain pipe road 10, the adjustment branch road 12 that the other end connects with return line 11；
The return air temperature sensor 6 arranged near the return air position of vaporizer 4；
Controller；
The evaporating pressure regulating valve 7 being arranged in return line 11, and when return air temperature is more than preset temperature, controller
Control evaporating pressure regulating valve 7 standard-sized sheet；When return air temperature is not more than preset temperature, controller controls evaporating pressure regulating valve 7
Aperture reduces or fully closed；
Being arranged on the electromagnetic valve 8 adjusted on branch road 12, when evaporating pressure regulating valve 7 standard-sized sheet, controller controls electromagnetic valve 8
Closing, when evaporating pressure regulating valve 7 aperture reduces or be fully closed, controller controls electromagnetic valve 8 and opens.
First flow path and the second flow path of mutual heat exchange, first flow path and condenser 2 and throttling dress it is provided with in subcooler 5
The drain pipe road 10 put between 3 is connected, and the return line 11 between second flow path with vaporizer 4 and compressor 1 is connected, and adjusts and props up
One end, road 12 connects with drain pipe road 10, and the other end connects with return line 11, and return air temperature sensor 6 is used for detecting return air temperature
Degree, when return air temperature is more than preset temperature, controller controls evaporating pressure regulating valve 7 standard-sized sheet, thus ensures that whole coolant is equal
Heat exchange is carried out through vaporizer 4；And when return air temperature is not more than preset temperature, controller controls the aperture of pressure-regulating valve and subtracts
Little or fully closed, meanwhile, open the electromagnetic valve 8 adjusted on branch road 12, the most some or all of coolant will after being flowed out by condenser 2
Entering subcooler 5 by adjusting branch road 12, return to compressor 1 in subcooler 5 after being evaporated to gaseous state, this can reduce and flows through steaming
Send out the coolant of device 4, thus reduce the refrigerating capacity of indoor, it is to avoid indoor temperature reduces further, it is ensured that indoor temperature maintains pre-
If near temperature value.
After adjusting electromagnetic valve 8 unlatching on branch road 12, coolant can enter in adjustment branch road 12 with impulse form, for
Avoid the liquid refrigerants that impulsive force is bigger to enter in compressor 1, the present embodiment is also provided with the hydrojet electromagnetism for current stabilization
Valve 9, and hydrojet electromagnetic valve 9 opening and closing Tong Bu with electromagnetic valve 8 under the control of the controller, so-called synchronization opens and closes
During that is electromagnetic valve is opened, hydrojet electromagnetic valve is together opened；During closed electromagnetic valve, hydrojet electromagnetic valve together cuts out.
Coolant owing to flowing out from condenser 2 is liquid, all gasifies in subcooler 5 if liquid refrigerants could not reach,
Easily compressor 1 is caused liquid hammer, this can badly damaged compressor 1, in this present embodiment also in the air entry position of compressor 1
Put and be provided with suction temperature sensor 14, bypass branch and bypass regulator valve 13, one end of bypass branch and the row of compressor 1
QI KOU connects, and the other end connects with return line 11, as shown in fig. 1, and the control of the controlled device of bypass regulator valve 13, and
The temperature of suction temperature sensor 14 is less than when presetting suction temperature, and controller controls bypass regulator valve 13 and opens；Pass in air-breathing
The temperature of sensor is not less than when presetting suction temperature, and controller controls bypass regulator valve 13 and cuts out.After increasing bypass branch, permissible
The coolant being not fully complete gasification is carried out heat supplement, so that it rapidly goes to gaseous state, this can effectively prevent coolant to compression
Machine 1 causes liquid hammer.
Please also refer to Fig. 5 and Fig. 6, Fig. 5 and Fig. 6 each provide the subcooler 5 of a kind of form, provided in Fig. 5
Subcooler 5 include outer casing and internal layer pipeline, internal layer pipeline dish in the shape of a spiral is located in described outer casing, and inner tube
Road constitutes first flow path, and the gap between internal layer pipeline and outer casing constitutes second flow path, and arrow represents the flowing side of coolant
To；Subcooler 5 provided in Fig. 6 is bushing type subcooler, and bushing type subcooler includes the inner layer sleeve that diameter is less, and
The outer layer sleeve being relatively large in diameter, inner layer sleeve constitutes first flow path, and inner layer sleeve constitutes second flow path with the gap of outer layer sleeve.
Refer to Fig. 2, arrow represents coolant flow direction, and Fig. 2 is return air temperature when being more than preset temperature, the circulation of coolant
Schematic diagram, through the coolant of compressor 1 compression, after check (non-return) valve, enters in condenser 2 and carries out heat exchange, and outdoor fan 15 draws
Lead outdoor air and flow through condenser 2, then flowed into subcooler 5 by first flow path, after throttling arrangement 3, enter vaporizer 4
Heat exchange, indoor fan 16 guides the air of indoor to flow through vaporizer 4, and then coolant flows into subcooler 5 via second flow path, this
Sample housing improves the degree of supercooling of coolant, improves the refrigerating capacity of unit mass coolant, eventually passes back to compressor 1 and form kind of refrigeration cycle；
Refer to Fig. 3, arrow represents coolant flow direction, and Fig. 3 is return air temperature when being not more than preset temperature, steam pressure
The circulation schematic diagram of coolant when control valve opening reduces, through the coolant of compressor 1 compression, after check (non-return) valve, enters condensation
Carrying out heat exchange in device 2, outdoor fan 15 guides outdoor air to flow through condenser 2, and the most a part of coolant is by first flow path stream
Entering subcooler 5, enter vaporizer 4 heat exchange after throttling arrangement 3, indoor fan 16 guides the air of indoor to flow through vaporizer
4, then coolant flows into subcooler 5 via second flow path；Another part coolant is flowed in return line 11 by adjusting branch road 12, with
Flow into subcooler 5 after converging via the coolant of vaporizer 4 backflow in return line 11, and be eventually returned in compressor 1.
Refer to Fig. 4, arrow represents coolant flow direction, and Fig. 4 is return air temperature when being not more than preset temperature, steam pressure
The circulation schematic diagram of coolant when regulation valve is fully closed, through the coolant of compressor 1 compression, after check (non-return) valve, enters in condenser 2
Carrying out heat exchange, outdoor fan 15 guides outdoor air to flow through condenser 2, and then all coolant is flowed into return-air by adjusting branch road 12
In pipeline 11, it is returned directly in compressor 1 via the second flow path of subcooler 5, meanwhile, in order to avoid compressor 1 is made
Becoming liquid hammer, bypass branch is opened, and makes the cold media gas of compressor 1 air vent mix with air inlet coolant, improves compressor 1
Suction temperature.
It is true that if return air temperature reaches or slightly less than preset temperature time, it is still desirable to have part coolant to flow through vaporizer
4, in order to maintain indoor temperature, through research, when the difference of return air temperature and preset temperature is 0 DEG C-2 DEG C (including endpoint value)
Time, condenser 2 coolant exporting outflow has half to flow through vaporizer 4, and second half returns after avoiding vaporizer 4 and being evaporated to gaseous state
More suitable to compressor 1, to this end, the aperture reduction of evaporating pressure regulating valve 7 can be controlled by controller, in order to make the temperature difference
The poorest mistake 2 DEG C；And when return air temperature is too low, it is necessary to temporarily cease the heat absorption function of vaporizer 4, in order to indoor temperature is gone up extremely
Near preset temperature, through research, when the difference of return air temperature with preset temperature is more than 2 DEG C, condenser 2 export outflow
Coolant returns to compressor 1 after all avoiding described vaporizer 4 and being evaporated to gaseous state more suitable, to this end, controller control can be passed through
Evaporating pressure regulating valve 7 processed is fully closed.
The system and method that fixed frequency air conditioner provided by the present invention adjusts refrigerating capacity above automatically is described in detail.
Principle and the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is simply used
In helping to understand method and the core concept thereof of the present invention.It should be pointed out that, for those skilled in the art,
Under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and modification, these improve and modify also
Fall in the protection domain of the claims in the present invention.
Claims (10)
1. the method that fixed frequency air conditioner adjusts refrigerating capacity automatically, including step:
1) return air temperature of vaporizer (4) position is detected；
2) when described return air temperature is more than preset temperature, condenser (2) outlet the coolant flowed out is all through described evaporation
Device (4) carries out heat exchange；When described return air temperature is not more than preset temperature, the outlet of condenser (2) coolant one flowed out
Lease making is crossed described vaporizer (4) and is carried out heat exchange, and remainder coolant returns to pressure after avoiding described vaporizer (4) and being evaporated to gaseous state
Contracting machine (1)；Or, condenser (2) outlet the coolant flowed out returns to after all avoiding described vaporizer (4) and being evaporated to gaseous state
Compressor (1).
Fixed frequency air conditioner the most according to claim 1 adjusts the method for refrigerating capacity automatically, it is characterised in that in described return air temperature
In the case of degree is not more than described preset temperature, and temperature gap is when 0 DEG C-2 DEG C, described condenser (2) outlet flow out
Coolant half flows through described vaporizer (4), and second half returns to described compressor after avoiding described vaporizer (4) and being evaporated to gaseous state
(1)。
Fixed frequency air conditioner the most according to claim 1 adjusts the method for refrigerating capacity automatically, it is characterised in that in described return air temperature
In the case of degree is not more than described preset temperature, and when temperature gap is more than 2 DEG C, condenser (2) outlet the coolant flowed out is complete
Portion returns to compressor (1) after avoiding described vaporizer (4) and being evaporated to gaseous state.
4. fixed frequency air conditioner adjusts a system for refrigerating capacity automatically, including be sequentially connected in series into by pipeline loop compressor (1),
Condenser (2), throttling arrangement (3) and vaporizer (4), it is characterised in that also include:
The subcooler (5) being arranged between described condenser (2) and described throttling arrangement (3), described subcooler includes phase in (5)
The mutually first flow path of heat exchange and second flow path, the drain pipe road (10) between described condenser (2) and described throttling arrangement (3) and
Described first flow path connects, the return line (11) between described vaporizer (4) and described compressor (1) and described second flow path
Connection；
One end connects with described drain pipe road (10), the adjustment branch road (12) that the other end connects with described return line (11)；
The return air temperature sensor (6) arranged near the return air position of described vaporizer (4)；
The evaporating pressure regulating valve (7) being arranged in described return line (11)；
It is arranged on the electromagnetic valve (8) on described adjustment branch road (12)；
Controller, when described return air temperature is more than preset temperature, it is complete that described controller controls described evaporating pressure regulating valve (7)
Open, and described controller controls described electromagnetic valve (8) and cuts out；When described return air temperature is not more than described preset temperature, control
Device controls described evaporating pressure regulating valve (7) aperture and reduces or fully closed, and described controller controls described electromagnetic valve (8) and opens.
Fixed frequency air conditioner the most according to claim 4 adjusts the system of refrigerating capacity automatically, it is characterised in that also include being arranged on
On described adjustment branch road (12), and it is positioned at the hydrojet electromagnetic valve (9) after described electromagnetic valve (8), and described hydrojet electromagnetic valve (9)
Opening and closing Tong Bu with described electromagnetic valve (8).
Fixed frequency air conditioner the most according to claim 4 adjusts the system of refrigerating capacity automatically, it is characterised in that also include:
It is arranged on the suction temperature sensor (14) of described compressor (1) air entry position；
One end connects with the air vent of described compressor (1), the bypass branch that the other end connects with described return line (11)；
The bypass regulator valve (13) being arranged on described bypass branch, and be less than in the temperature of described suction temperature sensor (14)
When presetting suction temperature, described controller controls described bypass regulator valve (13) and opens；Described air suction sensor temperature not
During less than described default suction temperature, described controller controls described bypass regulator valve (13) and cuts out.
7. automatically adjust the system of refrigerating capacity according to the fixed frequency air conditioner described in claim 4-6 any one, it is characterised in that institute
Stating subcooler (5) is bushing type subcooler, and described bushing type subcooler includes the inner layer sleeve that diameter is less, and is relatively large in diameter
Outer layer sleeve, described inner layer sleeve constitutes described first flow path, and the gap of described inner layer sleeve and described outer layer sleeve is constituted
Described second flow path.
8. automatically adjust the system of refrigerating capacity according to the fixed frequency air conditioner described in claim 4-6 any one, it is characterised in that institute
State subcooler (5) and include that outer casing and internal layer pipeline, described internal layer pipeline dish in the shape of a spiral are located in described outer casing, and
Described internal layer pipeline constitutes described first flow path, and the gap between described internal layer pipeline and described outer casing constitutes described second
Stream.
Fixed frequency air conditioner the most according to claim 4 adjusts the system of refrigerating capacity automatically, it is characterised in that in described return air temperature
In the case of degree is not more than described preset temperature, and temperature gap is when 0 DEG C-2 DEG C, and described controller controls described evaporating pressure
The aperture of regulation valve (7) reduces.
Fixed frequency air conditioner the most according to claim 4 adjusts the system of refrigerating capacity automatically, it is characterised in that at described return air
In the case of temperature is not more than described preset temperature, and when temperature gap is more than 2 DEG C, described controller controls described evaporating pressure
Regulation valve (7) is fully closed.
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| CN201610515226.4A CN106196430A (en) | 2016-06-30 | 2016-06-30 | Fixed frequency air conditioner adjusts the system and method for refrigerating capacity automatically |
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| CN106766416A (en) * | 2016-12-26 | 2017-05-31 | 广东美的制冷设备有限公司 | Determine frequency machine regulating system and its adjusting method and fixed frequency air conditioner machine |
| CN107339684A (en) * | 2017-06-23 | 2017-11-10 | 珠海格力电器股份有限公司 | A kind of steam generating equipment, steam sauna system and its control method |
| CN107726569A (en) * | 2017-10-31 | 2018-02-23 | 广东美的暖通设备有限公司 | A kind of control method of air conditioner, control system and air conditioner |
| CN109162913A (en) * | 2018-10-23 | 2019-01-08 | 珠海凌达压缩机有限公司 | Compressor tests alternative system and control method |
| CN111051793A (en) * | 2017-09-07 | 2020-04-21 | 三菱电机株式会社 | Air conditioning apparatus |
| CN113566380A (en) * | 2020-04-29 | 2021-10-29 | 宁波奥克斯电气股份有限公司 | Compressor heat dissipation device and method and air conditioner |
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| CN106766416B (en) * | 2016-12-26 | 2024-04-26 | 广东美的制冷设备有限公司 | Frequency-fixed machine adjusting system, adjusting method thereof and frequency-fixed air conditioner |
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| CN107339684A (en) * | 2017-06-23 | 2017-11-10 | 珠海格力电器股份有限公司 | A kind of steam generating equipment, steam sauna system and its control method |
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| CN107726569A (en) * | 2017-10-31 | 2018-02-23 | 广东美的暖通设备有限公司 | A kind of control method of air conditioner, control system and air conditioner |
| CN109162913A (en) * | 2018-10-23 | 2019-01-08 | 珠海凌达压缩机有限公司 | Compressor tests alternative system and control method |
| CN113566380A (en) * | 2020-04-29 | 2021-10-29 | 宁波奥克斯电气股份有限公司 | Compressor heat dissipation device and method and air conditioner |
| CN114508831A (en) * | 2022-02-09 | 2022-05-17 | 青岛海尔空调器有限总公司 | Air conditioner, air conditioner detection method and device, electronic equipment and storage medium |
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