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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 PDF

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Publication number
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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China
Prior art keywords
valve
temperature
air
outlet
expansion valve
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Granted
Application number
CN201811203297.6A
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Chinese (zh)
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CN109458683B (en
Inventor
涂虬
邓晨冕
周馨瑜
章莹莹
程路易
张驰
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Ningbo University of Technology
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Ningbo Haizhipu Intelligent Technology Co Ltd
Ningbo University of Technology
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Priority to CN201811203297.6A priority Critical patent/CN109458683B/en
Publication of CN109458683A publication Critical patent/CN109458683A/en
Application granted granted Critical
Publication of CN109458683B publication Critical patent/CN109458683B/en
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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

发明公开了一种干式辐射热泵与单元式分户空调一体机，包括干式辐射热泵机组、若干暖气片或毛细管、风盘换热器、风道和若干出风口；风盘换热器与风道连通，每个房间的出风口上均配设有出风格栅和步进电机，且每个房间内至少设有一个暖气片或毛细管；还包括喷焓辅路，提高系统在低温环境下的稳定性。本发明还公开了干式辐射热泵与单元式分户空调一体机控制方法。本发明公开的干式辐射热泵与单元式分户空调一体机及其控制方法，采用氟系统，一套室外机组连接一套或多套暖气片/毛细管，进行辐射供热，同时匹配一台风盘，连接多条风管，实现多房间送风制冷，且在低温环境下，稳定运行。

The invention discloses a dry radiant heat pump and a unit type household air conditioner integrated machine, comprising a dry radiant heat pump unit, a plurality of radiators or capillaries, an air plate heat exchanger, an air duct and a plurality of air outlets; The air duct is connected, the air outlet of each room is equipped with an outlet grille and a stepper motor, and each room is provided with at least one radiator or capillary; it also includes a spray enthalpy auxiliary circuit to improve the system's performance in low temperature environments. stability. The invention also discloses a control method for an integrated machine of the dry type radiant heat pump and the unit type household air conditioner. The dry radiant heat pump and the unit type household air conditioner integrated machine and the control method thereof disclosed by the invention adopt a fluorine system, one set of outdoor units is connected with one or more sets of radiators/capillary tubes for radiant heat supply, and at the same time, an air plate is matched , connect multiple air ducts to achieve multi-room air supply and cooling, and operate stably in a low temperature environment.

Description

Dry type radiant heat pump and modular point of family air conditioner integrated machine and its control method
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)

1.一种干式辐射热泵与单元式分户空调一体机，其特征在于：包括干式辐射热泵机组、若干暖气片或毛细管(19)、风盘换热器(17)、风道(52)和若干出风口(44)；所述风盘换热器(17)与风道(52)连通，风道(52)为设在建筑内部的通风管道，若干所述出风口(44)对应设在建筑内的每一个房间内，且各出风口(44)上均配设有出风格栅和步进电机，所述出风格栅的格栅角度通过步进电机可调，以控制各出风口(44)的出风量大小；且每个房间内至少设有一个暖气片或毛细管(9)；1. a dry radiant heat pump and unit type household air conditioner integrated machine, it is characterized in that: comprise dry radiant heat pump unit, some radiators or capillary (19), air plate heat exchanger (17), air duct (52 ) and several air outlets (44); the air plate heat exchanger (17) is communicated with the air duct (52), and the air duct (52) is a ventilation duct arranged inside the building, and several of the air outlets (44) correspond to It is set in each room in the building, and each air outlet (44) is equipped with an outlet grille and a stepping motor, and the grille angle of the air outlet grille can be adjusted by the stepper motor to control The size of the air outlet of each air outlet (44); and each room is provided with at least one radiator or capillary (9); 干式辐射热泵机组，包括直流变频压缩机(1)、油分离器(2)、高压压力传感器(30)、四通换向阀(3)、室外换热器(4)、室外电子膨胀阀(7)、经济器(9)、第一单向阀(10)、喷焓电子膨胀阀(11)、喷焓电磁阀(12)、第二单向阀(13)、液管截止阀(14)、气管截止阀(22)、气液分离器(23)；A dry radiant heat pump unit, including a DC inverter compressor (1), an oil separator (2), a high-pressure pressure sensor (30), a four-way reversing valve (3), an outdoor heat exchanger (4), and an outdoor electronic expansion valve (7), economizer (9), first check valve (10), injection enthalpy electronic expansion valve (11), injection enthalpy solenoid valve (12), second check valve (13), liquid pipe stop valve ( 14), trachea stop valve (22), gas-liquid separator (23); 直流变频压缩机(1)的出口与油分离器(2)入口连通，油分离器(2)出口与四通换向阀(3)入口连通，四通换向阀(3)的第一出口与室外换热器(4)入口连通，室外换热器(4)出口经由室外电子膨胀阀(7)、经济器(9)、第一单向阀(10)、液管截止阀(14)分别与风盘换热器(17)及暖气片或毛细管(19)入口连通，且第一单向阀(10)与室外电子膨胀阀(7)、经济器(9)并联设置；风盘换热器(17)及暖气片或毛细管(19)的出口经气管截止阀(22)与四通换向阀(3)的第二出口连通；四通换向阀(3)的第三出口经气液分离器(23)与直流变频压缩机(1)的回气口连通；The outlet of the DC inverter compressor (1) is communicated with the inlet of the oil separator (2), the outlet of the oil separator (2) is communicated with the inlet of the four-way reversing valve (3), and the first outlet of the four-way reversing valve (3) It is communicated with the inlet of the outdoor heat exchanger (4), and the outlet of the outdoor heat exchanger (4) passes through the outdoor electronic expansion valve (7), the economizer (9), the first one-way valve (10), and the liquid pipe stop valve (14) It is respectively connected with the inlet of the air plate heat exchanger (17) and the radiator or capillary (19), and the first one-way valve (10) is arranged in parallel with the outdoor electronic expansion valve (7) and the economizer (9); The outlet of the heater (17) and the radiator or capillary (19) is communicated with the second outlet of the four-way reversing valve (3) through the trachea stop valve (22); the third outlet of the four-way reversing valve (3) is The gas-liquid separator (23) is communicated with the air return port of the DC variable frequency compressor (1); 还包括喷焓辅路，所述的喷焓辅路包括喷焓电子膨胀阀(11)和喷焓电磁阀(12)，经济器(9)的第一入口与室外电子膨胀阀(7)连通，经济器(9)的第一出口与液管截止阀(14)连通，喷焓电子膨胀阀(11)和喷焓电磁阀(12)设在经济器(9)的第一出口与第二入口之间，经济器(9)的第二出口经由第二单向阀(13)与直流变频压缩机(1)的喷焓口连通。It also includes an injection enthalpy auxiliary circuit, the injection enthalpy auxiliary circuit includes an injection enthalpy electronic expansion valve (11) and an injection enthalpy solenoid valve (12), the first inlet of the economizer (9) is communicated with the outdoor electronic expansion valve (7), and the economical The first outlet of the device (9) is communicated with the liquid pipe stop valve (14), and the injection enthalpy electronic expansion valve (11) and the injection enthalpy solenoid valve (12) are located between the first outlet and the second inlet of the economizer (9). During this time, the second outlet of the economizer (9) is communicated with the enthalpy injection port of the DC variable frequency compressor (1) via the second one-way valve (13). 2.一种基于权利要求1所述的干式辐射热泵与单元式分户空调一体机的控制方法，其特征在于，包括以下步骤：2. a control method based on the dry radiant heat pump and unit type household air conditioner integrated machine according to claim 1, is characterized in that, comprises the following steps: 制冷模式下，机组运行，暖气片或毛细管电子膨胀阀(18)关闭，机组接收相应房间遥控器或线控器发出的预设指令，获取当前的设定温度和对应出风口(44)的回风温度；根据回风温度与设定温度的差值(实际温差)对出风口格栅角度进行调节：In the cooling mode, the unit is running, the radiator or capillary electronic expansion valve (18) is closed, the unit receives the preset command sent by the corresponding room remote control or wire controller, and obtains the current set temperature and the return of the corresponding air outlet (44). Air temperature; adjust the angle of the air outlet grille according to the difference between the return air temperature and the set temperature (actual temperature difference): 当实际温差＜【设定值4】，格栅角度为0°；当实际温差＞【设定值5】，格栅角度为90°；当【设定值4】≤实际温差≤【设定值5】时，格栅角度的调节与温差变化成正比，即温差增大，格栅角度调大，温差减小，格栅角度调小；When the actual temperature difference < [set value 4], the grille angle is 0°; when the actual temperature difference > [set value 5], the grille angle is 90°; when [set value 4] ≤ actual temperature difference ≤ [set value When the value is 5], the adjustment of the grille angle is proportional to the change of the temperature difference, that is, the temperature difference increases, the grille angle increases, the temperature difference decreases, and the grille angle becomes smaller; 此模式下，室外电子膨胀阀(6)保持全开度，确保系统冷媒循环量；风盘电子膨胀阀(15)根据风盘换热器(17)进出口过热度进行调节，当实际进出口过热度＞【设定值3】，进行开阀调节；当实际进出口过热度＜【设定值3】，进行关阀调节。当实际进出口过热度＝【设定值3】，保持当前阀开度，暖气片或毛细管电子膨胀阀(18)关闭；In this mode, the outdoor electronic expansion valve (6) is kept fully open to ensure the circulation of refrigerant in the system; the air-pan electronic expansion valve (15) is adjusted according to the superheat degree of the inlet and outlet of the air-pan heat exchanger (17). When the superheat degree > [set value 3], the valve opening adjustment is performed; when the actual inlet and outlet superheat degree < [setting value 3], the valve closing adjustment is performed. When the actual inlet and outlet superheat = [set value 3], the current valve opening is maintained, and the radiator or capillary electronic expansion valve (18) is closed; 制热模式下，机组运行，风盘电子膨胀阀(15)关闭，暖气片或毛细管电子膨胀阀(18)开启，并保持350PLS开度，暖气片或毛细管(19)向房间内辐射制热；In the heating mode, the unit is running, the air plate electronic expansion valve (15) is closed, the radiator or capillary electronic expansion valve (18) is opened, and the opening degree is maintained at 350PLS, and the radiator or capillary (19) radiates heat into the room; 此模式下，室外电子膨胀阀(7)根据以下实际吸气过热度进行调节：In this mode, the outdoor electronic expansion valve (7) is adjusted according to the actual suction superheat as follows: 当实际吸气过热度＞目标吸气过热度，进行开阀调节；When the actual suction superheat is greater than the target suction superheat, valve opening adjustment is performed; 当实际吸气过热度＜目标吸气过热度，进行关阀调节。When the actual suction superheat is less than the target suction superheat, valve closing adjustment is performed. 3.根据权利要求2所述的干式辐射热泵与单元式分户空调一体机的控制方法，其特征在于：3. the control method of dry radiant heat pump and unit type household air conditioner integrated machine according to claim 2, is characterized in that: 制冷模式下，当蒸发器中部温度＞目标蒸发温度时，进行压缩机升频调节；当蒸发器中部温度≤目标蒸发温度，进行压缩机降频调节；In cooling mode, when the temperature in the middle of the evaporator is greater than the target evaporating temperature, the compressor frequency is adjusted up; when the temperature in the middle of the evaporator is less than or equal to the target evaporating temperature, the compressor frequency is adjusted down; 制热模式，当蒸发器中部温度＞目标冷凝温度，进行压缩机降频调节；当蒸发器中部温度≤目标冷凝温度，进行压缩机升频调节。In heating mode, when the temperature in the middle of the evaporator > the target condensing temperature, the compressor will be down-frequency adjusted; when the temperature in the middle of the evaporator is ≤ the target condensing temperature, the compressor will be up-frequency adjusted. 4.根据权利要求2所述的干式辐射热泵与单元式分户空调一体机的控制方法，其特征在于：在制热模式下，室外电子膨胀阀(7)根据排气过热度加以修正调节：4. The control method of the dry radiant heat pump and the unit type household air conditioner integrated machine according to claim 2, it is characterized in that: in the heating mode, the outdoor electronic expansion valve (7) is corrected and adjusted according to the degree of superheat of the exhaust gas : 当排气过热度＜【设定值1】时，直接进行关阀调节，以增大排气过热度；当排气过热度＞【设定值2】时，直接进行开阀调节，以降低排气过热度；当【设定值1】≤排气过热度≤【设定值2】时，室外电子膨胀阀按照目标吸气过热度正常调节。When the degree of exhaust superheat < [set value 1], directly perform valve closing adjustment to increase the degree of exhaust superheat; when the degree of exhaust superheat > [set value 2], directly perform valve opening adjustment to reduce the Exhaust superheat; when [set value 1]≤exhaust superheat≤[set value 2], the outdoor electronic expansion valve is normally adjusted according to the target intake superheat. 5.根据权利要求2-4中任意一项所述的干式辐射热泵与单元式分户空调一体机的控制方法，其特征在于：在制热模式下，5. The control method of the dry radiant heat pump and the unit type household air conditioner integrated machine according to any one of claims 2-4, characterized in that: in the heating mode, a、当排气温度和排气过热度未达到预设值时，喷焓电磁阀(12)处于掉电关闭状态，喷焓辅路不流通；a. When the exhaust gas temperature and the exhaust superheat degree do not reach the preset values, the injection enthalpy solenoid valve (12) is in a power-off closed state, and the injection enthalpy auxiliary circuit does not flow; b、当排气温度≥【设定值6】，且排气过热度≥【设定值7】时，喷焓电磁阀(12)得电开启，喷焓辅路流通；喷焓电子膨胀阀(11)开启，且初始开度为100PLS，保持3min后，根据步骤c进行控制调节；b. When the exhaust gas temperature ≥ [set value 6] and the exhaust superheat degree ≥ [set value 7], the injection enthalpy solenoid valve (12) is energized to open, and the injection enthalpy auxiliary circuit flows; the injection enthalpy electronic expansion valve ( 11) open, and the initial opening is 100PLS, after maintaining for 3min, control and adjust according to step c; c、当实际过热度≥目标过热度时，喷焓电子膨胀阀(11)进行开阀控制；当实际过热度＜目标过热度时，喷焓电子膨胀阀(11)进行关阀控制；c. When the actual superheat degree ≥ the target superheat degree, the injection enthalpy electronic expansion valve (11) performs valve opening control; when the actual superheat degree < target superheat degree, the injection enthalpy electronic expansion valve (11) performs valve closing control; d、当排气过热度＜【设定值11】时，喷焓电子膨胀阀(11)关闭，喷焓辅路不流通，保障压缩机安全可靠性优先。d. When the degree of superheat of exhaust gas is less than [set value 11], the injection enthalpy electronic expansion valve (11) is closed, and the injection enthalpy auxiliary circuit does not flow, and the safety and reliability of the compressor is guaranteed first. 6.根据权利要求5所述的干式辐射热泵与单元式分户空调一体机的控制方法，其特征在于：步骤b中，为避免压缩机出现回液，根据排气温度不同范围限制喷焓电子膨胀阀(11)的最大开度；6. the control method of the dry radiant heat pump and the unit type household air conditioner integrated machine according to claim 5, it is characterized in that: in step b, in order to prevent the compressor from returning to liquid, limit the spray enthalpy according to the different ranges of the exhaust temperature The maximum opening of the electronic expansion valve (11); 当排气温度＞100℃时，最大开度为【设定值8】；当90℃＜排气温度≤100℃时，最大开度为【设定值9】；当排气温度≤90℃，最大开度为【设定值10】。When the exhaust temperature>100℃, the maximum opening is [set value 8]; when 90℃＜exhaust temperature≤100℃, the maximum opening is [set value 9]; when the exhaust temperature≤90℃ , the maximum opening is [set value 10].
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CN106524404A (en) * 2016-10-27 2017-03-22 邯郸美的制冷设备有限公司 Air conditioner control method and system and air conditioner
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CN108518892A (en) * 2018-05-03 2018-09-11 中国科学院理化技术研究所 Air supply control device based on air source heat pump system and control method thereof

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