CN109458683A - Dry type radiant heat pump and modular point of family air conditioner integrated machine and its control method - Google Patents
Dry type radiant heat pump and modular point of family air conditioner integrated machine and its control method Download PDFInfo
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- CN109458683A CN109458683A CN201811203297.6A CN201811203297A CN109458683A CN 109458683 A CN109458683 A CN 109458683A CN 201811203297 A CN201811203297 A CN 201811203297A CN 109458683 A CN109458683 A CN 109458683A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 69
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000005057 refrigeration Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims description 29
- 230000005494 condensation Effects 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 claims description 8
- 238000010977 unit operation Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052731 fluorine Inorganic materials 0.000 abstract description 6
- 239000011737 fluorine Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 238000001816 cooling Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000003550 marker Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 230000009885 systemic effect Effects 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
-
- 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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
-
- 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
-
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Human Computer Interaction (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A kind of dry type radiant heat pump of disclosure of the invention and modular point of family air conditioner integrated machine, including dry type radiant heat pump unit, several radiators or capillary, wind disk heat exchanger, air duct and several air outlets；Wind disk heat exchanger is connected to air duct, and air outlet grate and stepper motor are equipped on the air outlet in each room, and at least provided with a radiator or capillary in each room；Further include spray enthalpy bypass, improves the stability of system at low ambient temperatures.The invention also discloses dry type radiant heat pumps and modular point of family air conditioner integrated machine control method.Dry type radiant heat pump disclosed by the invention and modular point of family air conditioner integrated machine and its control method, it is united using fluorine system, a set of outdoor unit connects one or more sets radiator/capillaries, carry out radiant heating, a typhoon disk is matched simultaneously, connects a plurality of air hose, realizes more room air-supply refrigeration, and at low ambient temperatures, stable operation.
Description
Technical field
The present invention relates to technical field of heat pumps, specifically a kind of dry type radiant heat pump and modular point of family air conditioner integrated
Machine and its control method.
Background technique
With economic development and the continuous improvement of living standard and the implementation of overall decorated house policy, air-conditioning heating
Demand rapidly increases.
Conventional air-conditioning comfort is poor, and especially heating effect is poor under low temperature environment, and it is empty that the multiple rooms in a family need to install more sets
Adjust unit or a set of multi-joint unit, equipment investment costly.Other heating modes, it is unhygienic for example, by using coal heating, and
And pollution environment, it is to generate the arch-criminal of haze, while be easy to causeing gas poisoning.
With the development of society, heat pump techniques have become mature, comfort is preferable, replaces common air-conditioning and coal-burning boiler, at
For a kind of trend.In addition air injection enthalpy-increasing technology is used, in conjunction with control measure appropriate, heating capacity can be improved, solve low temperature system
The problem of thermal effect difference, heat pump have begun into family and use, and are received by vast user.
But current heat pump is all the system using water as medium, is had the disadvantage that
1) need to design the heat exchanger an of refrigerant and water heat exchange, it is at high cost such as double-tube heat exchanger, plate heat exchanger；
2) hot water that heat exchanger generates enters in radiator or capillary, then carries out secondary radiation heat exchange, energy with water
It imitates low；
3) there are freezing pipeline and leak risk, safety and reliability is not high；
4) when installing bad, it is easy leak, damages room and article, to floor heating, maintenance is extremely inconvenient, needs detachably
Plate is overhauled.It is limited above using water as the use of the heat pump of heat transferring medium.
In addition, the heating effect and performance demands of heat pump system under low temperature use environment are improved by Gas-supplying enthalpy-increasing circuit
Number.But, during actual use, the refrigerant for being diverted to spray enthalpy bypass is likely to be liquid phase or gas-liquid two-phase, if control
It is bad, it is likely that into compressor spray enthalpy mouth is band liquid cooling matchmaker, leads to compressor hydraulic compression, system long time running can make to press
Contracting machine serious wear influences system normal operation.
Therefore, problem above is solved by technical solution appropriate, huge economic and social benefit will be brought, greatly
Push environment optimization.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of dry type radiant heat pump and modular point of family air conditioner integrated machine
And its control method, it is united using fluorine system, a set of outdoor unit connects one or more sets radiator/capillaries, radiant heating is carried out,
A typhoon disk is matched simultaneously, connects a plurality of air hose, realizes more room air-supply refrigeration.
A kind of dry type radiant heat pump of the present invention is specifically included with modular point of family air conditioner integrated machine: including dry type spoke
Penetrate heat pump unit, several radiators or capillary, wind disk heat exchanger, air duct and several air outlets；The wind disk heat exchanger and wind
Road connection, air duct is the ventilation shaft for being located at building interior, and several air outlets are correspondingly arranged at each room in building
It is interior, and air outlet grate and stepper motor are equipped on each air outlet, the grid angle of the air outlet grate passes through stepper motor
It is adjustable, to control the air output size of each air outlet；And at least provided with a radiator or capillary in each room；
Wherein, dry type radiant heat pump unit includes DC frequency-changeable compressor, oil eliminator, high-pressure pressure sensor, four-way
Reversal valve, outdoor heat exchanger, outdoor electrical expansion valve, economizer, the first check valve, spray enthalpy electric expansion valve, spray enthalpy solenoid valve,
Second one-way valve, liquid pipe shut-off valve, tracheae shut-off valve, gas-liquid separator；
The outlet of DC frequency-changeable compressor is connected to oil eliminator entrance, and oil eliminator outlet connects with four-way reversing valve entrance
Logical, the first outlet of four-way reversing valve is connected to outdoor heat exchanger entrance, outdoor heat exchanger export via outdoor electrical expansion valve,
Economizer, the first check valve, liquid pipe shut-off valve are connected to wind disk heat exchanger and radiator or capillary inlet respectively, and first is single
It is arranged in parallel to valve and outdoor electrical expansion valve, economizer；The outlet transtracheal of wind disk heat exchanger and radiator or capillary is cut
Only valve is connected to the second outlet of four-way reversing valve；It is compressed through gas-liquid separator and DC frequency-changing the third outlet of four-way reversing valve
The gas returning port of machine is connected to；
It further include spray enthalpy bypass, the spray enthalpy bypass includes spray enthalpy electric expansion valve and sprays enthalpy solenoid valve, economizer
First entrance is connected to outdoor electrical expansion valve, and the first outlet of economizer is connected to liquid pipe shut-off valve, sprays enthalpy electric expansion valve
And spray enthalpy solenoid valve is located between the first outlet of economizer and second entrance, the second outlet of economizer is via second one-way valve
It is connected to the spray enthalpy mouth of DC frequency-changeable compressor.
The present invention also provides the control methods of a kind of dry type radiant heat pump and modular point of family air conditioner integrated machine, including with
Lower step:
Under refrigeration mode, unit operation, radiator or capillary electric expansion valve (18) are closed, and unit receives corresponding room
The preset instructions that remote controler or line control machine issue obtain the return air temperature of current set temperature and corresponding air outlet (44)；Root
Air outlet grille angle is adjusted according to the difference of return air temperature and set temperature:
When practical temperature difference < [setting value 4], grid angle is 0 °；When practical temperature difference > [setting value 5], grid angle is
90°；When [setting value 4]≤practical temperature difference≤[setting value 5], the adjusting of grid angle is directly proportional to difference variation, i.e. the temperature difference
Increase, grid angle tunes up, and the temperature difference reduces, and grid angle is turned down；
Under this mode, outdoor electrical expansion valve (6) keeps full gate, it is ensured that system refrigerant circulation；Wind disk electronic expansion
Valve (15) is imported and exported the degree of superheat according to wind disk heat exchanger (17) and is adjusted, and imports and exports degree of superheat > [setting value 3] when practical,
Carry out valve opening adjusting；When actually importing and exporting degree of superheat < [setting value 3], pass valve regulation is carried out.When actually inlet and outlet the degree of superheat=
[setting value 3], keeps current valve opening, and radiator or capillary electric expansion valve (18) are closed；
Under heating mode, unit operation, wind disk electric expansion valve (15) is closed, radiator or capillary electric expansion valve
(18) it opens, and keeps 350PLS aperture, radiator or capillary (19) radiate heating into room；
Under this mode, outdoor electrical expansion valve (7) is adjusted according to following practical suction superheat:
When practical suction superheat > target suction superheat, valve opening adjusting is carried out；
When practical suction superheat < target suction superheat, pass valve regulation is carried out.
Further, under refrigeration mode, when evaporator middle portion temperature > target evaporating temperature, compressor raising frequency tune is carried out
Section；When evaporator middle portion temperature≤target evaporating temperature, compressor frequency reducing adjusting is carried out；
Heating mode carries out compressor frequency reducing adjusting when evaporator middle portion temperature > target condensation temperature；When in evaporator
Portion's temperature≤target condensation temperature carries out the adjusting of compressor raising frequency.
As an improvement, in a heating mode, outdoor electrical expansion valve is corrected adjusting according to discharge superheat:
When discharge superheat < [setting value 1], pass valve regulation is carried out, directly to increase discharge superheat；When being vented
When temperature > [setting value 2], directly progress valve opening adjusting, to reduce discharge superheat；When [setting value 1]≤discharge superheat≤
When [setting value 2], outdoor electrical expansion valve is according to target suction superheat normal regulating.
It is improved again, in a heating mode, also have follow steps:
A, when delivery temperature and discharge superheat are not up to preset value, spray enthalpy solenoid valve (12) is in power down and closes shape
State, spray enthalpy bypass do not circulate；
B, when delivery temperature >=[setting value 6], and when discharge superheat >=[setting value 7], spray enthalpy solenoid valve (12) obtains electric
It opens, spray enthalpy bypass circulation；It sprays enthalpy electric expansion valve (11) to open, and initial opening is 100PLS, after keeping 3min, according to
Step c is controlled to adjust；
C, when the practical degree of superheat >=target superheat degree, spray enthalpy electric expansion valve (11) carries out valve opening control；When practical mistake
When temperature < target superheat degree, spray enthalpy electric expansion valve (11) carries out closing valve control；
D, when discharge superheat < [setting value 11], spray enthalpy electric expansion valve (11) is closed, and spray enthalpy bypass does not circulate, and is protected
It is preferential to hinder compressor security reliability.
Preferably, in step b, to avoid compressor from liquid occur back, spray enthalpy electronics is limited according to delivery temperature different range
The maximum opening of expansion valve；When 100 DEG C of delivery temperature >, maximum opening is [setting value 8]；When 90 DEG C of < delivery temperatures≤
At 100 DEG C, maximum opening is [setting value 9]；When delivery temperature≤90 DEG C, maximum opening is [setting value 10].
Compared with the prior art, the present invention has the following advantages:
1, all-in-one machine structure of the invention, traditional unitary air conditioner (heat pump) unit of changing over can only be realized individually
The problem of room or single area refrigeration or heating, only by unitary air conditioner system realize multiple regions refrigeration,
Heating, and have and stablize, the control of accurate system, adjustment process, converter unit machine systematic difference model has been widened well
It encloses.
2, the universal conventional trilogy supply of the prior art is water system, and in the present invention is fluorine system system；The heat exchange of water system is
By fluorine → water → water, there are secondary heat exchanges, and in actual use, especially hot water side, effect are undesirable.In the present invention
System be fluorine → air (air-conditioning side) and fluorine → water (floor heating, domestic hot-water side), secondary heat exchange is not present, effect is good.Especially
It is domestic hot-water side, in compressor air-discharging side, can preferentially guarantees hot water effect.
3, in control method of the invention: under the premise of guaranteeing the operation of compressor long-term reliability, by continuing dynamic
The control method of adjusting controls the bypass of compressor Gas-supplying enthalpy-increasing, first is that can increase the refrigerant quality stream of compressor
Amount, the effective heating capacity for improving compressor, the operational effect of lifting system；Second is that improving system under the conditions of low-temperature heating
Low pressure, compressor frequency reducing caused by avoiding low pressure too low, guarantee DC frequency-changeable compressor according to the certain normal control of condensation temperature,
Ensure the heating effect of unit.
More importantly control method of the invention is a kind of dynamic control and regulation, and at the same time according to multiple variables
Target is as adjustment parameter, and with the variation of parameter, the moment carries out dynamic regulation, and auxiliary for spray enthalpy in existing conventional system
The control on road is generally only the single variation according to delivery temperature to control the opening and closing of corresponding electric expansion valve, and existing
Regulative mode is usually to be set to multiple control intervals, and electric expansion valve corresponding with each control interval to delivery temperature
With a fixed opening value, this mode is obviously inaccurate for the aperture regulation of electric expansion valve, when control parameter
When temperature is raised to another section from a certain section, the corresponding aperture of electric expansion valve may generate steps increase, cause
System it is unstable.
Detailed description of the invention
Fig. 1 is the systematic schematic diagram of a kind of dry type radiant heat pump and modular point of family air conditioner integrated machine of the invention.
Fig. 2 is that the indoor air duct arrangement of a kind of dry type radiant heat pump and modular point of family air conditioner integrated machine of the invention is illustrated
Figure.
Fig. 3 is the refrigeration mode system flow of a kind of dry type radiant heat pump and modular point of family air conditioner integrated machine of the invention
Figure.
Fig. 4 is the heating mode system flow of a kind of dry type radiant heat pump and modular point of family air conditioner integrated machine of the invention
Figure.
Fig. 5 is a kind of dry type radiant heat pump and modular point of family air conditioner integrated machine heating mode of the invention outside different chamber
Target superheat degree schematic diagram under environment temperature.
As shown in the figure, in which: 1- DC frequency-changeable compressor；2- oil eliminator；3- four-way reversing valve；4- outdoor heat exchanger；
5- outdoor fan motor；6,8,26- filter；7- outdoor electrical expansion valve；9- economizer；10, the first check valve；13- second
Check valve；11- sprays enthalpy electric expansion valve；12- sprays enthalpy solenoid valve；14- liquid pipe shut-off valve；15- wind disk electric expansion valve；16- wind
Disk fan motor；17- wind disk heat exchanger；18- radiator or capillary electric expansion valve；19- radiator or capillary；22- gas
Pipe shut-off valve；23- gas-liquid separator；24- off-load solenoid valve；25,27- capillary；28- low pressure switch；29- high-pressure
Switch；30- high-pressure pressure sensor；31-suction temperature sensors；32-exhaust gas temperature sensors；33- outdoor environment temperature
Sensor；34- defrosting temperature sensor；35- wind disk heat exchanger inlet temperature sensor；36- radiator or capillary inlet temperature
Spend sensor；38- wind disk heat exchanger outlet temperature sensor；39- radiator or capillary outlet temperature sensor；41- wind disk
Heat exchanger middle portion temperature sensor；42- sprays enthalpy bypass inlet temperature sensor；43- sprays enthalpy bypass outlet temperature sensor；44-
Air outlet；Each room return air temperature sensor of 45-；The air duct 46-.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
In the description of the present invention, it should be noted that [setting value 1]~[setting value 11] is adjustable numerical value, it
It is not some specific unique value, customized can sets according to the actual situation.
In addition, term " first ", " second ", " third " are used for description purposes only, it is not understood to indicate or imply phase
To importance.
As shown in Fig. 1~5, the present invention provides a kind of dry type radiant heat pumps and modular point of family air conditioner integrated machine, including
Dry type radiant heat pump unit, several radiators or capillary 19, wind disk heat exchanger 17, air duct 46 and several air outlets 44；Wind disk
Heat exchanger 17 is connected to air duct 46, and air duct 46 is the ventilation shaft for being located at building interior, and several air outlets 44 are correspondingly arranged at building
In each interior room, and air outlet grate and stepper motor are equipped on each air outlet 44, the grid angle of air outlet grate
It is adjustable by stepper motor, to control the air output size of each air outlet 44；And at least provided with a radiator in each room
Or capillary 9.
Wherein, dry type radiant heat pump unit include DC frequency-changeable compressor 1, oil eliminator 2, high-pressure pressure sensor 30,
Four-way reversing valve 3, outdoor heat exchanger 4, outdoor electrical expansion valve 7, economizer 9, the first check valve 10, spray enthalpy electric expansion valve
11, enthalpy solenoid valve 12, second one-way valve 13, liquid pipe shut-off valve 14, tracheae shut-off valve 22, gas-liquid separator 23 are sprayed.
Specifically, the outlet of DC frequency-changeable compressor 1 is connected to 2 entrance of oil eliminator, the outlet of oil eliminator 2 is changed with four-way
Be connected to 3 entrance of valve, the first outlet of four-way reversing valve 3 is connected to 4 entrance of outdoor heat exchanger, outdoor heat exchanger 4 export via
Outdoor electrical expansion valve 7, economizer 9, the first check valve 10, liquid pipe shut-off valve 14 respectively with wind disk heat exchanger 17 and radiator
Or the connection of 19 entrance of capillary, and the first check valve 10 is arranged in parallel with outdoor electrical expansion valve 7, economizer 9；Wind disk heat exchanger
17 and the outlet transtracheal shut-off valve 22 of radiator or capillary 19 be connected to the second outlet of four-way reversing valve 3；Four-way commutation
The third outlet of valve 3 is connected to through gas-liquid separator 23 with the gas returning port of DC frequency-changeable compressor 1.
In the present embodiment, which further includes spray enthalpy bypass, specifically, spray enthalpy bypass includes spray enthalpy electric expansion valve
11 and spray enthalpy solenoid valve 12.Wherein, the first entrance of economizer 9 is connected to outdoor electrical expansion valve 7, and the first of economizer 9 goes out
Mouthful be connected to liquid pipe shut-off valve 14, sprays enthalpy electric expansion valve 11 and spray enthalpy solenoid valve 12 is located at the first outlet and the of economizer 9
Between two entrances, the second outlet of economizer 9 is connected to via second one-way valve 13 with the spray enthalpy mouth of DC frequency-changeable compressor 1.
In the present embodiment, it is additionally provided with the first capillary 27 between 1 gas returning port of oil eliminator 2 and DC frequency-changeable compressor, directly
It flows and is successively arranged the second capillary 25, off-load solenoid valve 24 between the outlet of frequency-changeable compressor 1 and the outlet of gas-liquid separator 23.
Cooling system process is as described below:
Refrigerant is after the compression of DC frequency-changeable compressor 1, by oil eliminator 2, four-way reversing valve 3, into outdoor heat exchanger 4
In with air carry out heat convection, condense heat release after through outdoor electrical expansion valve 7, economizer 9 and check valve 10, using liquid pipe
Shut-off valve 14, Jing Fengpan electric expansion valve 15 enter wind disk 17 and air and carry out heat convection, then by tracheae shut-off valve 22,
Four-way reversing valve 3 enters gas-liquid separator 23, and the gaseous coolant after gas-liquid separation returns to DC frequency-changeable compressor 1 and compressed,
Complete refrigeration cycle.Room air after heat convection is sent to each air outlet 44 for being provided with air outlet grate by air duct 46,
It enters the room environment and undertakes refrigeration duty, the angle of air outlet grate is adjusted by stepper motor.
It is as described below that system heats process:
Refrigerant is after the compression of DC frequency-changeable compressor 1, by oil eliminator 2, four-way reversing valve 3, tracheae shut-off valve 22, into
Enter and carry out radiation heat transfer in radiator or capillary 19 with air, by radiator or capillary electric expansion valve after condensation heat release
18, through liquid pipe shut-off valve 14, then through economizer 9 and outdoor electrical expansion valve 7, carried out into outdoor heat exchanger 4 with air
Heat convection, enters gas-liquid separator 23 through four-way reversing valve 3 after evaporation endothermic, and the gaseous coolant after gas-liquid separation returns to direct current
Frequency-changeable compressor 1 is compressed, and heating circulation is completed.
The present invention also provides the control methods of a kind of dry type radiant heat pump and modular point of family air conditioner integrated machine, including with
Lower step:
Under refrigeration mode, unit operation, radiator or capillary electric expansion valve 18 are closed, and it is distant that unit receives corresponding room
The preset instructions that device or line control machine issue are controlled, the return air temperature of current set temperature and corresponding air outlet 44 is obtained；Setting temperature
Degree is the set temperature of remote controler or line control machine；Return air temperature then by corresponding room air outlet 44 return air temperature sensor
45 detections obtain.
Air outlet grille angle is adjusted according to the difference of return air temperature and set temperature.Wherein, the practical temperature difference=
Return air temperature-set temperature.
When practical temperature difference < [setting value 4], grid angle is 0 °；When practical temperature difference > [setting value 5], grid angle is
90°；When [setting value 4]≤practical temperature difference≤[setting value 5], the adjusting of grid angle is directly proportional to difference variation, i.e. the temperature difference
Increase, grid angle tunes up, and the temperature difference reduces, and grid angle is turned down.
In practical applications, any one of multiple rooms remote controler or line control machine can control unit starting, each
Remote controler or line control machine are equipped with " booting ", " shutdown " key and " unlatching " of grid, "close" key." unlatching " of grid,
"Off" state does marker in the processing of unit internal processes, such as: 0- is closed, and 1- is opened, in use, " opening by Under The Grille
Open " key, set temperature, grid angle can be adjusted according to relevant parameter；When using finishing, by the "close" key of Under The Grille,
When the number that procedure identification marker is " 1 " is equal to 0, determines that unit is closed, do shutdown processing；When procedure identification marker is
When the number of " 1 " is greater than 0, the operation of unit normal boot-strap is determined.
In addition, it should be noted that refrigeration mode is all unified in all rooms in the present invention.
For the present embodiment, such as: -2 DEG C and 2 DEG C of practical temperature difference control parameter, i.e., are as follows: practical when refrigeration mode
Return air temperature it is 2 DEG C lower than set temperature, be: setting 16 DEG C, 14 DEG C of return air hereinafter, room without cooling load demand, at this time
Close grid；When practical air returning ratio set temperature is 2 DEG C high, it is: 16 DEG C of setting, 18 DEG C of return air or more, space cooling load demand
Bigger, grid opens to the maximum at this time.Also, between -2 DEG C to the 2 DEG C temperature difference, grid is a Dynamic Regulating Process, at any time
The angle of grid is adjusted.
Under this refrigeration mode, outdoor electrical expansion valve 6 keeps full gate, it is ensured that system refrigerant circulation；Wind disk electronics is swollen
Swollen valve 15 is imported and exported the degree of superheat according to wind disk heat exchanger 17 and is adjusted, practical to import and export the degree of superheat=wind disk heat exchanger exit temperature
Degree-wind disk heat exchanger inlet temperature, and wind disk heat exchanger outlet temperature and wind disk heat exchanger inlet temperature are respectively by being located at wind disk
The wind disk heat exchanger inlet temperature sensor 35 and wind disk heat exchanger outlet temperature sensor 38 of 17 inlet and outlet of heat exchanger
Detection obtains.
When actually importing and exporting degree of superheat > [setting value 3], valve opening adjusting is carried out；When actually inlet and outlet degree of superheat < [setting
Value 3], carry out pass valve regulation.When actually importing and exporting the degree of superheat=[setting value 3], valve keeps current aperture, radiator or capillary
Pipe electric expansion valve 18 is closed.
Under heating mode, unit operation, wind disk electric expansion valve 15 is closed, and radiator or capillary electric expansion valve 18 are opened
It opens, and keeps 350PLS aperture, radiator or capillary 19 radiate heating into room；
Under this mode, outdoor electrical expansion valve 7 is adjusted according to following practical suction superheat:
When practical suction superheat > target suction superheat, valve opening adjusting is carried out；
When practical suction superheat < target suction superheat, pass valve regulation is carried out.
In the present embodiment, more specifically, in cooling mode, in order to preferably guarantee refrigeration effect, compressor frequency
It is controlled to adjust according to aims of systems evaporating temperature:
When evaporator middle portion temperature > target evaporating temperature, the adjusting of compressor raising frequency is carried out；When evaporator middle portion temperature
≤ target evaporating temperature carries out compressor frequency reducing adjusting；Wherein, target evaporating temperature is the target temperature reference that systemic presupposition is set
Value.
Identical, under heating mode, in order to preferably guarantee refrigeration effect, compressor frequency evaporates temperature according to aims of systems
Degree is controlled to adjust:
When evaporator middle portion temperature > target condensation temperature, compressor frequency reducing adjusting is carried out；When evaporator middle portion temperature≤
Target condensation temperature carries out the adjusting of compressor raising frequency.Wherein, target condensation temperature is the target temperature reference that systemic presupposition is set
Value.
In the present embodiment, in a heating mode, outdoor electrical expansion valve 7 is corrected adjusting according to discharge superheat,
In, discharge superheat (the corresponding saturation temperature of delivery temperature-high-pressure), delivery temperature is detected by exhaust gas temperature sensor 32
It obtains, the corresponding saturation degree of high-pressure passes through system program calculation processing by the detected data of high-pressure pressure sensor 30
After obtain.Specific adjusting is as follows:
When discharge superheat < [setting value 1], pass valve regulation is carried out, directly to increase discharge superheat；When being vented
When temperature > [setting value 2], directly progress valve opening adjusting, to reduce discharge superheat；When [setting value 1]≤discharge superheat≤
When [setting value 2], outdoor electrical expansion valve is according to target suction superheat normal regulating.
Specifically, in a heating mode, control method for Gas-supplying enthalpy-increasing bypass the following steps are included:
A, when delivery temperature and discharge superheat are not up to preset value, spray enthalpy solenoid valve 12 is in power down closed state,
Spray enthalpy bypass does not circulate；
B, when delivery temperature >=[setting value 6], and when discharge superheat >=[setting value 7], spray enthalpy solenoid valve 12 must be established by cable
It opens, spray enthalpy bypass circulation；It sprays enthalpy electric expansion valve 11 to open, and initial opening is 100PLS, after keeping 3min, according to step c
It is controlled to adjust；
C, when the practical degree of superheat >=target superheat degree, spray enthalpy electric expansion valve 11 carries out valve opening control；When practical overheat
When spending < target superheat degree, spray enthalpy electric expansion valve 11 carries out closing valve control；Valve opening control herein, pass valve control and are substantially
The dynamic regulation of one aperture, rather than the open and close on practical significance.
In this step, the practical degree of superheat=spray enthalpy bypass outlet temperature-spray enthalpy bypass inlet temperature.Wherein, enthalpy bypass is sprayed
Outlet temperature and spray enthalpy bypass inlet temperature are respectively by spray enthalpy bypass inlet temperature sensor 42 and spray enthalpy bypass outlet temperature
The detection of sensor 43 obtains.
Target superheat degree is corresponding specific objective value under a certain environment temperature, is illustrated in figure 2 in varying environment temperature
Under target superheat degree curve, i.e., a corresponding specific target superheat angle value under each environment temperature.So practical mistake
Temperature is a dynamic value, and target superheat degree is a definite value under a certain environment temperature.
D, when discharge superheat < [setting value 11], spray enthalpy electric expansion valve 11 is closed, and spray enthalpy bypass does not circulate, and is ensured
Compressor security reliability is preferential.
Certainly, during practical adjustments, with the raising of delivery temperature, the aperture for spraying enthalpy electric expansion valve 11 is also not
Increase always, to avoid compressor from liquid occur back, the maximum of spray enthalpy electric expansion valve 11 is limited according to delivery temperature different range
Aperture: when 100 DEG C of delivery temperature >, maximum opening is [setting value 8]；When 90 DEG C of delivery temperature≤100 DEG C <, maximum is opened
Degree is [setting value 9]；When delivery temperature≤90 DEG C, maximum opening is [setting value 10].
Preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This hair
Bright to be not only limited to above embodiments, specific structure is allowed to vary, all institutes in the protection scope of demand for independence of the present invention
The various change of work is within the scope of the invention.
Claims (6)
1. a kind of dry type radiant heat pump and modular point of family air conditioner integrated machine, it is characterised in that: including dry type radiant heat pump unit,
Several radiators or capillary (19), wind disk heat exchanger (17), air duct (52) and several air outlets (44)；The wind disk heat exchanger
(17) it is connected to air duct (52), air duct (52) are the ventilation shaft for being located at building interior, and several air outlet (44) correspondences are set
In each room in building, and air outlet grate and stepper motor are equipped on each air outlet (44), the style out
The grid angle of grid is adjustable by stepper motor, to control the air output size of each air outlet (44)；And in each room at least
Equipped with a radiator or capillary (9)；
Dry type radiant heat pump unit, including DC frequency-changeable compressor (1), oil eliminator (2), high-pressure pressure sensor (30), four
Logical reversal valve (3), outdoor heat exchanger (4), outdoor electrical expansion valve (7), economizer (9), the first check valve (10), spray enthalpy electronics
Expansion valve (11), spray enthalpy solenoid valve (12), second one-way valve (13), liquid pipe shut-off valve (14), tracheae shut-off valve (22), gas-liquid point
From device (23)；
The outlet of DC frequency-changeable compressor (1) is connected to oil eliminator (2) entrance, oil eliminator (2) outlet and four-way reversing valve
(3) entrance is connected to, and the first outlet of four-way reversing valve (3) is connected to outdoor heat exchanger (4) entrance, outdoor heat exchanger (4) outlet
Via outdoor electrical expansion valve (7), economizer (9), the first check valve (10), liquid pipe shut-off valve (14) respectively with wind disk heat exchanger
, and the first check valve (10) and outdoor electrical expansion valve (7), economizer (17) and radiator or the connection of capillary (19) entrance
(9) it is arranged in parallel；The outlet transtracheal shut-off valve (22) of wind disk heat exchanger (17) and radiator or capillary (19) is changed with four-way
It is connected to the second outlet of valve (3)；The third of four-way reversing valve (3) is exported through gas-liquid separator (23) and DC frequency-changeable compressor
(1) gas returning port connection；
It further include spray enthalpy bypass, the spray enthalpy bypass includes spray enthalpy electric expansion valve (11) and spray enthalpy solenoid valve (12), economy
The first entrance of device (9) is connected to outdoor electrical expansion valve (7), and the first outlet of economizer (9) and liquid pipe shut-off valve (14) are even
It is logical, it sprays enthalpy electric expansion valve (11) and spray enthalpy solenoid valve (12) is located between the first outlet and second entrance of economizer (9), pass through
The second outlet of Ji device (9) is connected to via second one-way valve (13) with the spray enthalpy mouth of DC frequency-changeable compressor (1).
2. a kind of control method based on dry type radiant heat pump and modular point of family air conditioner integrated machine described in claim 1,
It is characterized in that, comprising the following steps:
Under refrigeration mode, unit operation, radiator or capillary electric expansion valve (18) are closed, and unit receives corresponding room remote control
The preset instructions that device or line control machine issue obtain the return air temperature of current set temperature and corresponding air outlet (44)；According to return
Air outlet grille angle is adjusted in the difference (the practical temperature difference) of air temperature and set temperature:
When practical temperature difference < [setting value 4], grid angle is 0 °；When practical temperature difference > [setting value 5], grid angle is 90 °；When
When [setting value 4]≤practical temperature difference≤[setting value 5], the adjusting of grid angle is directly proportional to difference variation, i.e., the temperature difference increases, lattice
Grid angle tunes up, and the temperature difference reduces, and grid angle is turned down；
Under this mode, outdoor electrical expansion valve (6) keeps full gate, it is ensured that system refrigerant circulation；Wind disk electric expansion valve
(15) degree of superheat is imported and exported according to wind disk heat exchanger (17) to be adjusted, when actually importing and exporting degree of superheat > [setting value 3], carry out
Valve opening is adjusted；When actually importing and exporting degree of superheat < [setting value 3], pass valve regulation is carried out.When the actually inlet and outlet degree of superheat=[setting
Value 3], current valve opening is kept, radiator or capillary electric expansion valve (18) are closed；
Under heating mode, unit operation, wind disk electric expansion valve (15) is closed, and radiator or capillary electric expansion valve (18) are opened
It opens, and keeps 350PLS aperture, radiator or capillary (19) radiate heating into room；
Under this mode, outdoor electrical expansion valve (7) is adjusted according to following practical suction superheat:
When practical suction superheat > target suction superheat, valve opening adjusting is carried out；
When practical suction superheat < target suction superheat, pass valve regulation is carried out.
3. the control method of dry type radiant heat pump and modular point of family air conditioner integrated machine according to claim 2, feature
It is:
Under refrigeration mode, when evaporator middle portion temperature > target evaporating temperature, the adjusting of compressor raising frequency is carried out；When in evaporator
Portion's temperature≤target evaporating temperature carries out compressor frequency reducing adjusting；
Heating mode carries out compressor frequency reducing adjusting when evaporator middle portion temperature > target condensation temperature；The temperature in the middle part of evaporator
Degree≤target condensation temperature carries out the adjusting of compressor raising frequency.
4. the control method of dry type radiant heat pump and modular point of family air conditioner integrated machine according to claim 2, feature
Be: in a heating mode, outdoor electrical expansion valve (7) is corrected adjusting according to discharge superheat:
When discharge superheat < [setting value 1], pass valve regulation is carried out, directly to increase discharge superheat；Work as discharge superheat
When > [setting value 2], directly progress valve opening adjusting, to reduce discharge superheat；When [setting value 1] ,≤discharge superheat≤[is set
Definite value 2] when, outdoor electrical expansion valve is according to target suction superheat normal regulating.
5. the control of dry type radiant heat pump and modular point of family air conditioner integrated machine according to any one of claim 2-4
Method, it is characterised in that: in a heating mode,
A, when delivery temperature and discharge superheat are not up to preset value, spray enthalpy solenoid valve (12) is in power down closed state, sprays
Enthalpy bypass does not circulate；
B, when delivery temperature >=[setting value 6], and when discharge superheat >=[setting value 7], spray enthalpy solenoid valve (12) obtains electric-opening,
Spray the circulation of enthalpy bypass；Spray enthalpy electric expansion valve (11) open, and initial opening be 100PLS, keep 3min after, according to step c into
Row controls to adjust；
C, when the practical degree of superheat >=target superheat degree, spray enthalpy electric expansion valve (11) carries out valve opening control；When the practical degree of superheat
When < target superheat degree, spray enthalpy electric expansion valve (11) carries out closing valve control；
D, when discharge superheat < [setting value 11], spray enthalpy electric expansion valve (11) is closed, and spray enthalpy bypass does not circulate, and ensures pressure
Contracting machine security reliability is preferential.
6. the control method of dry type radiant heat pump and modular point of family air conditioner integrated machine according to claim 5, feature
It is: in step b, to avoid compressor from liquid occur back, spray enthalpy electric expansion valve (11) is limited according to delivery temperature different range
Maximum opening；
When 100 DEG C of delivery temperature >, maximum opening is [setting value 8]；When 90 DEG C of delivery temperature≤100 DEG C <, maximum is opened
Degree is [setting value 9]；When delivery temperature≤90 DEG C, maximum opening is [setting value 10].
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| CN201811203297.6A CN109458683B (en) | 2018-10-16 | 2018-10-16 | Dry type radiation heat pump and unit type household air conditioner all-in-one machine and control method thereof |
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