CN106839308A - A kind of control method of air-conditioning, device and air-conditioning - Google Patents
A kind of control method of air-conditioning, device and air-conditioning Download PDFInfo
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- CN106839308A CN106839308A CN201710064208.3A CN201710064208A CN106839308A CN 106839308 A CN106839308 A CN 106839308A CN 201710064208 A CN201710064208 A CN 201710064208A CN 106839308 A CN106839308 A CN 106839308A
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- refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of control method of air-conditioning, device and air-conditioning, belong to air-conditioning technical field.Control method includes：Obtain outdoor temperature threshold value and tonifying Qi temperature conditionss；Outdoor temperature, outdoor unit temperature and radiator temperature during acquisition operation of air conditioner heating mode；It is not more than outdoor temperature threshold value in outdoor temperature, and outdoor unit temperature is when being not more than solidifying frost critical-temperature, adjusts the aperture of first throttle device, radiator temperature is met tonifying Qi temperature conditionss.Control method of the invention can be when outdoor temperature be less than solidifying frost critical-temperature, first throttle device is opened in control, the refrigerant from indoor set heat exchanger outflow is set to be exchanged heat with electric control element by radiator, waste heat such that it is able to be produced using electric control element improves the thermic load of the refrigerant for filling into, so that heat exchange after refrigerant can reach compressor Gas-supplying enthalpy-increasing needed for refrigerant state, improve the service behaviour of compressor.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of control method of air-conditioning, device and air-conditioning.
Background technology
In the market determine frequency or convertible frequency air-conditioner product, air-conditioning is in the winter time in severe cold running, due to external environment
Temperature is too low, causes outdoor unit heat exchanger very few with the heat exchange amount of outdoor environment so that indoor set heating capacity is reduced, it is impossible to met
The demand of heating, therefore generally require Gas-supplying enthalpy-increasing operation is carried out to compressor, to reduce the delivery temperature of compressor, lifting is empty
The heating capacity of adjustment machine.
Conventional Gas-supplying enthalpy-increasing pipeline is that the exit setting one of machine heat exchanger indoors is connected to compressor gas supplementing opening
Refrigerant branch line, and in compressor during Gas-supplying enthalpy-increasing, what is filled into is mostly middle pressure cold media gas, therefore directly from room
The state of the refrigerant that interior machine heat exchanger is introduced tends not to meet the requirement of Gas-supplying enthalpy-increasing, limits the compression efficiency of compressor.
The content of the invention
The embodiment of the invention provides a kind of control method of air-conditioning, device and air-conditioning.In order to the embodiment for disclosing
Some aspects have a basic understanding, shown below is simple summary.The summarized section is not extensive overview, nor will
Determine key/critical component or describe the protection domain of these embodiments.Its sole purpose is presented with simple form
Some concepts, in this, as the preamble of following detailed description.
According to an aspect of the invention, there is provided a kind of control method of air-conditioning, control method includes：Obtain outdoor temp
Degree threshold value and tonifying Qi temperature conditionss, wherein, tonifying Qi temperature conditionss include that the refrigerant for flowing back to gas-liquid separator is meeting fill temperature
Degree radiator temperature corresponding when requiring；Outdoor temperature, outdoor unit temperature and radiating during acquisition operation of air conditioner heating mode
Device temperature；It is not more than outdoor temperature threshold value in outdoor temperature, and outdoor unit temperature is when being not more than solidifying frost critical-temperature, with max-flow
Reference opening amount of the corresponding aperture as first throttle device is measured, the aperture of first throttle device is adjusted, expires radiator temperature
Sufficient tonifying Qi temperature conditionss.
Further, tonifying Qi temperature conditionss, including：
TRadiator=Tao+C,
Wherein, TRadiatorIt is radiator temperature, Tao is outdoor temperature, and C is temperature adjustment parameter, and span is 3~6 DEG C.
Further, tonifying Qi temperature conditionss also include that the refrigerant for flowing back to gas-liquid separator is meeting tonifying Qi temperature requirement when institute
The delivery temperature of corresponding compressor；Control method also includes：Obtain the delivery temperature of compressor；According to delivery temperature and exhaust
Temperature threshold, adjusts the flow aperture of first throttle device, delivery temperature is met tonifying Qi temperature conditionss.
Further, control method also includes：According to outdoor temperature, the solidifying white critical-temperature of outdoor unit environment is determined.
Further, control method also includes：When outdoor unit temperature is more than solidifying frost critical-temperature, with maximum stream flow correspondence
Aperture as first throttle device reference opening amount, control reduce first throttle device flow aperture；Or in outdoor temp
When degree is more than outdoor temperature threshold value, using the corresponding aperture of maximum stream flow as the reference opening amount of first throttle device, control is reduced
The flow aperture of first throttle device.
Further, control method also includes：Obtain the target indoor temperature of real-time indoor temperature and user's setting；According to
Temperature gap, the flow aperture of first throttle device of real-time indoor temperature and target indoor temperature, adjust second throttling device
With the flow aperture of the 3rd throttling arrangement.
According to the second aspect of the invention, a kind of control device of air-conditioning is additionally provided, control device includes：Obtain single
Unit, for obtaining outdoor temperature threshold value and tonifying Qi temperature conditionss, wherein, tonifying Qi temperature conditionss include flowing back to gas-liquid separator
The refrigerant radiator temperature corresponding when tonifying Qi temperature requirement is met；And obtained during for obtaining operation of air conditioner heating mode
Outdoor temperature, outdoor unit temperature and the radiator temperature for taking；Main control unit, for being not more than outdoor temperature threshold in outdoor temperature
Value, and outdoor unit temperature is when being not more than solidifying frost critical-temperature, using the corresponding aperture of maximum stream flow as the base of first throttle device
Quasi- aperture, adjusts the aperture of first throttle device, radiator temperature is met tonifying Qi temperature conditionss.
Further, acquiring unit is used to obtain tonifying Qi temperature conditionss, including：
TRadiator=Tao+C,
Wherein, TRadiatorIt is radiator temperature, Tao is outdoor temperature, and C is temperature adjustment parameter, and span is 3~6 DEG C.
Further, tonifying Qi temperature conditionss also include that the refrigerant for flowing back to gas-liquid separator is meeting tonifying Qi temperature requirement when institute
The delivery temperature of corresponding compressor；Acquiring unit is additionally operable to obtain the row of compressor acquired during operation of air conditioner heating mode
Temperature degree；Main control unit is used to be adjusted according to delivery temperature and delivery temperature threshold value the flow aperture of first throttle device, makes row
Temperature degree meets tonifying Qi temperature conditionss.
Further, main control unit is additionally operable to：According to outdoor temperature, the solidifying white critical-temperature of outdoor unit environment is determined.
Further, main control unit is additionally operable to：When outdoor unit temperature is more than solidifying frost critical-temperature, with maximum stream flow correspondence
Aperture as first throttle device reference opening amount, control reduce first throttle device flow aperture；Or in outdoor temp
When degree is more than outdoor temperature threshold value, using the corresponding aperture of maximum stream flow as the reference opening amount of first throttle device, control is reduced
The flow aperture of first throttle device.
Further, acquiring unit is used to obtain the target indoor temperature of real-time indoor temperature and user's setting；Master control list
Unit for the flow aperture according to the temperature gap of real-time indoor temperature and target indoor temperature, first throttle device, regulation the
The flow aperture of two throttling arrangements and the 3rd throttling arrangement.
According to the third aspect of the present invention, a kind of air-conditioning is additionally provided, air-conditioning includes the interior with the second heat exchanger
Machine, the outdoor unit with First Heat Exchanger, compressor and gas-liquid separator, the gas outlet of gas-liquid separator and the air-breathing of compressor
Mouth is connected, and electrical control member is located outside in machine, and First Heat Exchanger, the second heat exchanger and compressor are by the first pipeline and the second pipe
Road is connected, and for constituting refrigerant circulation circuit, air-conditioning also includes cooling component, and cooling component has flash evaporation, first throttle
Device and the radiator for being radiated for electrical control member, wherein, flash evaporation is connected on the first pipeline, and radiator passes through cooling line
Air inlet respectively with gas-liquid separator, flash evaporation are connected, and first throttle device is arranged between gas-liquid separator and radiator
Cooling line on, air-conditioning have be arranged at second throttling device on the first pipeline between the second heat exchanger and flash evaporation,
And the 3rd throttling arrangement on the first pipeline between First Heat Exchanger and flash evaporation is arranged at, air-conditioning is provided with for detecting
The first sensor of outdoor temperature, the second sensor for detecting outdoor unit temperature, the 3rd biography for detecting indoor temperature
Sensor, the 4th sensor for detecting radiator temperature and the 5th sensor for detecting delivery temperature.
Control method of the invention can be when outdoor temperature be less than solidifying frost critical-temperature, and first throttle dress is opened in control
Put, the refrigerant from indoor set heat exchanger outflow is exchanged heat with electric control element by radiator, such that it is able to using electricity
The waste heat that control element is produced improves the thermic load of the refrigerant for filling into, so that the refrigerant after heat exchange can reach compressor Gas-supplying enthalpy-increasing
Required refrigerant state, improves the service behaviour of compressor.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows and meets implementation of the invention
Example, and be used to explain principle of the invention together with specification.
Fig. 1 is the flow chart one of control method of the present invention；
Fig. 2 is the flowchart 2 of control method of the present invention；
Fig. 3 is the overall structure diagram of air-conditioning of the present invention；
Fig. 4 is the pressure-enthalpy chart of refrigerant circulation in air-conditioning of the present invention；
Fig. 5 is the tephigram of refrigerant circulation in air-conditioning of the present invention.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Other embodiments can include structure, logic, it is electric, process and it is other changes.Embodiment
Only represent possible change.Unless explicitly requested, otherwise single components and functionality is optional, and the order for operating can be with
Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The scope of bright embodiment includes the gamut of claims, and all obtainable of claims is equal to
Thing.Herein, each embodiment can individually or generally be represented that it is convenient that this is used for the purpose of with term " invention ",
And if in fact disclosing the invention more than, the scope for being not meant to automatically limit the application is any single invention
Or inventive concept.Herein, such as first and second or the like relational terms be used only for by an entity or operation with
Another entity or operation make a distinction, without requiring or implying between these entities or operation there is any actual relation
Or order.And, term " including ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion so that
So that process, method or equipment including a series of key elements not only include those key elements, but also including being not expressly set out
Other key elements, or also include be this process, method or the intrinsic key element of equipment.In the feelings without more limitations
Under condition, the key element limited by sentence "including a ...", it is not excluded that in the process including the key element, method or equipment
In also there is other identical element.Each embodiment herein is described by the way of progressive, and each embodiment is stressed
Be all difference with other embodiment, between each embodiment identical similar portion mutually referring to.For implementing
For example disclosed method, product etc., because it is corresponding with method part disclosed in embodiment, so the comparing of description is simple
Single, related part is referring to method part illustration.
As depicted in figs. 1 and 2, the invention provides a kind of control method of air-conditioning, control method includes：
S101, acquisition outdoor temperature threshold value and tonifying Qi temperature conditionss, wherein, the tonifying Qi temperature conditionss include flowing back to gas
The refrigerant of the liquid/gas separator radiator temperature corresponding when tonifying Qi temperature requirement is met；
Control method of the present invention is the thermic load for increasing refrigerant using the waste heat of electric control element, and refrigerant is flowed back to after making heat exchange
Compressor carries out Gas-supplying enthalpy-increasing, therefore while first throttle device is adjusted to control refrigerant tonifying Qi temperature, should also make radiating
Device temperature reaches corresponding tonifying Qi temperature conditionss, can fully be exchanged heat with electric control element with the refrigerant for flowing through radiator, supplemented
The thermic load of refrigerant.
Outdoor temperature, outdoor unit temperature and radiator temperature when S102, acquisition operation of air conditioner heating mode；
In embodiment, outdoor temperature is obtained by being arranged at the first sensor detection on the outside of outdoor unit, outdoor unit temperature
Detected by being arranged at second sensor inside outdoor unit and obtained, radiator temperature by be arranged on heat radiator fin the
The detection of four sensors is obtained.Wherein, its changing with outdoor environment can be directly influenced due to coagulating frost on outdoor unit First Heat Exchanger
The thermal efficiency, therefore second sensor is arranged at the position of the neighbouring First Heat Exchanger in outdoor unit inside, and second sensor is surveyed
First Heat Exchanger temperature as the parameter for judging whether to reach the critical-temperature of solidifying frost in subsequent step；
S103, it is not more than outdoor temperature threshold value in outdoor temperature, and when outdoor unit temperature is not more than solidifying frost critical-temperature,
Using the corresponding aperture of maximum stream flow as the reference opening amount of first throttle device, the aperture of first throttle device is adjusted, make radiating
Device temperature meets tonifying Qi temperature conditionss；
In embodiment, the present invention is to weigh whether compressor needs the ginseng of Gas-supplying enthalpy-increasing as sentencing to coagulate frost critical-temperature
Number, in operation of air conditioner heating mode, the First Heat Exchanger of outdoor unit is exchanged heat with its surrounding air, in First Heat Exchanger
Refrigerant heat absorption evaporation, causing the temperature of its surrounding air reduces, and outdoor unit still occurs solidifying frost problem, therefore in outdoor temperature not
During more than outdoor temperature threshold value, it is still necessary to judge outdoor unit temperature whether more than the critical-temperature of solidifying frost；
In embodiment, when outdoor unit temperature is not more than solidifying frost critical-temperature, outdoor unit meets solidifying ice-lolly part, outdoor unit
First Heat Exchanger surface starts solidifying frost occur, in order to keep the heat exchange efficiency of First Heat Exchanger, it is therefore desirable to which compressor is carried out
Gas-supplying enthalpy-increasing is operated, and in step s 103, is opened by controlling first throttle device, refrigerant is flowed along cooling line, is utilized
The waste heat of electric control element is heated to refrigerant, refrigerant is reached the refrigerant conditions dictate of Gas-supplying enthalpy-increasing.
In said process, the aperture of first throttle device is improved to the corresponding aperture of maximum stream flow from initial opening or
Control first throttle device is opened with the corresponding aperture of maximum stream flow, to improve the entirety flow of the refrigerant in cooling line, so that
The heat exchange amount of increase refrigerant and electric control element, and then refrigerant is met the refrigerant conditions dictate of Gas-supplying enthalpy-increasing；Simultaneously as automatically controlled
The temperature of element and radiator is also influenceed by outdoor environment, in the flow of control method of the present invention, based on maximum stream flow pair
The aperture answered, Secondary Control is carried out to first throttle device, makes can persistently entering for radiator and the heat transfer process of electric control element
OK.
In certain embodiments, the step of tonifying Qi temperature conditionss are obtained in the present invention includes：According to outdoor temperature, it is determined that mending
Gas temperature conditionss, tonifying Qi temperature conditionss are：
TRadiator=Tao+C,
Wherein, TRadiatorIt is radiator temperature, Tao is outdoor temperature, and C is temperature adjustment parameter, and span is 3~6 DEG C.This hair
In bright tonifying Qi temperature conditionss, radiator temperature is higher than outdoor temperature, it is possible to reduce because radiator temperature is less than outdoor temperature
The problem of caused spreader surface condensation；Meanwhile, the radiator temperature is also under radiator temperature threshold value, Bu Huigan
Disturb the radiating and cooling of electric control element.
Optionally, tonifying Qi temperature conditionss also include flowing back to that the refrigerant of gas-liquid separator institute when tonifying Qi temperature requirement is met is right
The delivery temperature of the compressor answered；In order that the delivery temperature of compressor disclosure satisfy that the refrigerant temperature of outdoor unit heat exchanger will
Ask, also include the step of control method of the invention：
The delivery temperature of compressor is obtained, in embodiment, delivery temperature is by being arranged at exhaust outlet of compressor position
The 4th sensor detection obtain；
According to delivery temperature and delivery temperature threshold value, the flow aperture of first throttle device is adjusted, meet delivery temperature
Tonifying Qi temperature conditionss.For example, the purpose of compressor Gas-supplying enthalpy-increasing is to reduce its delivery temperature, therefore delivery temperature threshold value of the present invention
It is a temperature upper limit, when the delivery temperature of compressor is under the temperature upper limit, the temperature of refrigerant disclosure satisfy that room
The heat exchange demand of outer machine heat exchanger；Therefore the present invention adjusts the flow aperture of first throttle device so that above-mentioned radiator temperature
Degree and delivery temperature can meet corresponding tonifying Qi temperature conditionss, to lift the operational efficiency of air-conditioning.
In one embodiment of the invention, control method also includes：Judging whether outdoor unit temperature faces more than solidifying frost
Before boundary's temperature, according to outdoor temperature, the solidifying white critical-temperature of outdoor unit environment is determined.Due to the season of region residing for air conditioner user
The factors such as section, weather, weather can cause the variation of outdoor temperature, therefore for the outdoor unit solidifying frost critical-temperature to be reached,
The outdoor temperature according to measured by is needed to determine the critical-temperature of solidifying frost.
In one embodiment of the invention, control method also includes：When outdoor unit temperature is more than solidifying frost critical-temperature,
Using the corresponding aperture of maximum stream flow as the reference opening amount of first throttle device, the flow that control reduces first throttle device is opened
Degree.
When outdoor unit temperature is more than solidifying frost critical-temperature, outdoor unit is influenceed with the heat exchange amount of outdoor environment by outdoor temperature
Reduce, in order to ensure the First Heat Exchanger of outdoor unit and the heat exchange amount of external environment, control method of the invention is with maximum stream flow
Corresponding aperture controls to reduce the flow aperture of first throttle device, so that tonifying Qi as the reference opening amount of first throttle device
The refrigerant temperature of increasing enthalpy is adapted with the temperature of outdoor environment, for example, in one embodiment, the maximum stream flow of first throttle device
Corresponding aperture is 500B, and when outdoor unit temperature is more than solidifying frost critical-temperature, control first throttle device is opened with medium aperture
Open, specifically, the aperture of first throttle device is reduced into 220B from 500B.
Similarly, when outdoor temperature is more than outdoor temperature threshold value, filled as first throttle using the corresponding aperture of maximum stream flow
The reference opening amount put, control reduces the flow aperture of first throttle device, so that the refrigerant temperature of Gas-supplying enthalpy-increasing and outdoor ring
The temperature in border is adapted.
In one embodiment of the invention, control method also includes：
Obtain the target indoor temperature of real-time indoor temperature and user's setting；
The flow aperture of temperature gap, first throttle device according to real-time indoor temperature and target indoor temperature, regulation
The flow aperture of second throttling device and the 3rd throttling arrangement.
In embodiment, it is connected in parallel with the first pipeline where the 3rd throttling arrangement because first throttle device can be considered,
Therefore, the cold medium flux for flowing through second throttling device be flow through first throttle device and the 3rd throttling arrangement cold medium flux it
With, therefore can determine to need to flow to indoor set second by the temperature gap of real-time indoor temperature and target indoor temperature and exchange heat
The cold medium flux of device, this cold medium flux is adapted with the flow aperture of the 3rd throttling throttling arrangement；Afterwards, second throttling device
Cold medium flux can be added by the cold medium flux of the cold medium flux of first throttle device and the 3rd throttling arrangement and be obtained, and then according to the
The cold medium flux of two throttling arrangements determines its flow aperture.
Present invention also offers a kind of control device of air-conditioning, the control device is using the control disclosed in above-described embodiment
Method processed is controlled air-conditioning accordingly, and control device includes：
Acquiring unit, for obtaining outdoor temperature threshold value and tonifying Qi temperature conditionss, wherein, tonifying Qi temperature conditionss include stream
The refrigerant of the return-air liquid/gas separator radiator temperature corresponding when tonifying Qi temperature requirement is met；And
Outdoor temperature, outdoor unit temperature and the radiator temperature detected during for obtaining operation of air conditioner heating mode；
Main control unit, for when outdoor temperature is not more than outdoor temperature threshold value, judging outdoor unit temperature whether more than solidifying
White critical-temperature；And when outdoor unit temperature is not more than solidifying frost critical-temperature, using the corresponding aperture of maximum stream flow as first
The reference opening amount of throttling arrangement, adjusts the aperture of first throttle device, radiator temperature is met tonifying Qi temperature conditionss.
In certain embodiments, acquiring unit is used to obtain tonifying Qi temperature conditionss, including：According to outdoor temperature, it is determined that mending
Gas temperature conditionss, tonifying Qi temperature conditionss are：
TRadiator=Tao+C,
Wherein, TRadiatorIt is radiator temperature, Tao is outdoor temperature, and C is temperature adjustment parameter, and span is 3~6 DEG C.
In certain embodiments, tonifying Qi temperature conditionss also include flowing back to the refrigerant of gas-liquid separator meet tonifying Qi temperature will
The delivery temperature of corresponding compressor when asking；Acquiring unit is additionally operable to obtain the compression detected during operation of air conditioner heating mode
The delivery temperature of machine；Main control unit is used for according to delivery temperature and delivery temperature threshold value, and the flow for adjusting first throttle device is opened
Degree, makes delivery temperature meet tonifying Qi temperature conditionss.
In certain embodiments, main control unit is additionally operable to：Judge outdoor unit temperature whether more than the critical-temperature of solidifying frost it
Before, according to outdoor temperature, determine the solidifying white critical-temperature of outdoor unit environment.
In certain embodiments, main control unit is additionally operable to：When outdoor unit temperature is more than solidifying frost critical-temperature, with max-flow
Reference opening amount of the corresponding aperture as first throttle device is measured, control reduces the flow aperture of first throttle device.
In certain embodiments, acquiring unit is used to obtain the target indoor temperature of real-time indoor temperature and user's setting；
Main control unit is used for temperature gap, the flow aperture of first throttle device according to real-time indoor temperature and target indoor temperature,
The flow aperture of regulation second throttling device and the 3rd throttling arrangement.
The air conditioner structure that control method and control device in above-described embodiment are applied is as shown in figure 3, the air-conditioning system
Including indoor set and outdoor unit, wherein, indoor set includes the second heat exchanger 2 exchanged heat with indoor environment, and outdoor unit includes
The First Heat Exchanger 1 exchanged heat with outdoor environment, the compressor 3 for providing circulation power for refrigerant, computer board, single-chip microcomputer
It is arranged in outdoor unit etc. electrical control member, First Heat Exchanger 1, the second heat exchanger 2 and compressor 3 are by the first pipeline 4 and the second pipe
Road 5 is connected, for constituting conventional refrigerant circulation circuit, in embodiment, air-conditioning system in summer operation refrigeration mode, with
Refrigerant outflow from First Heat Exchanger 1 after outdoor environment heat exchange, First Heat Exchanger 1 is flowed into via the second pipeline 5, meanwhile,
Flowed out from the second heat exchanger 2 with the refrigerant after indoor environment heat exchange, First Heat Exchanger 1 is flowed into via the first pipeline 4, by this
Refrigerant circulation process, is capable of achieving refrigeration cool-down function of the air-conditioning system to indoor environment.Similarly, heating mode is run in the winter time
When, refrigerant flows between the heat exchanger 2 of First Heat Exchanger 1 and second along the direction opposite with refrigeration mode.It is capable of achieving air-conditioning system
System heats a liter temperature function to indoor environment.
In addition to above-mentioned conventional refrigerant circulation circuit, air-conditioning system of the invention also includes cooling tube group, for solving electricity
Temperature too high problem when control works.
Specifically, cooling tube group mainly includes cooling component and the two parts of cooling line 9, wherein, cooling component is mainly wrapped
Include：
Flash evaporation 6, flash evaporation 6 is connected on the first pipeline 4, and the operative liquid refrigerant that can will flow through the first pipeline 4 steams
It is gaseous coolant to send out, and gaseous coolant is delivered in cooling line 9, so that follow-up as cooling line 9 by the use of gaseous coolant
Heat transferring medium in cooling procedure；
First throttle device 801, is arranged on the first pipeline 4, for adjusting stream of the gaseous coolant in cooling line 9
Amount, and pressure and temperature of the refrigerant after electrical control member exchanges heat etc. are adjusted, so that the refrigerant for flowing into compressor 3 can meet pressure
The need for the Gas-supplying enthalpy-increasing of contracting machine 3；
Radiator 7, radiator 7 is connected on cooling line 9 and neighbouring electrical control member is set, because electrical control member is arranged on mostly
In the semienclosed containers such as electric-controlled box, therefore radiator 7 can lead to as gaseous coolant and the heat-exchange carrier of electrical control member surrounding air
Cross and the surrounding air of electric control element lowered the temperature, so can by the temperature control of electrical control member itself safe working temperature with
Under.The concrete structure and type of radiator 7 can be set in embodiment according to the structure determination of outdoor unit on cooling line 9
The type of radiator 7 is advection heat exchanger, and advection heat exchanger has the advantages that heat transfer rate is high, space hold is small, it is adaptable to which structure is tight
The air conditioner outdoor unit structure gathered.
It is for sequence of flow of the refrigerant for electrical control member radiating and cooling in cooling tube group：First 4 → flash evaporation of pipeline 6
7 → gas-liquid separator of → radiator, 10 → compressor 3, first throttle device 801 can be arranged as required in flash evaporation 6 and pressure
On cooling line 9 between contracting machine 3.
Mostly it is that the refrigerant in refrigerant pipeline is directly delivered to compressor 3 in the Gas-supplying enthalpy-increasing structure of conventional air conditioning system
In, during this, the parameter such as temperature and pressure of refrigerant does not have too big change, and in air-conditioning system of the invention, stream
Raised through the temperature of the gaseous coolant of radiator 7, pressure increases, therefore reduce the follow-up compression efficiency to refrigerant of compressor 3, be
This problem is solved, in one embodiment of the invention, air-conditioning system also includes that second throttling device 802 and the 3rd throttles and fills
803 are put, wherein, second throttling device 802 is arranged on the first pipeline 4 between the second heat exchanger 2 and flash evaporation 6, Section three
Stream device 803 is arranged on the first pipeline 4 between First Heat Exchanger 1 and flash evaporation 6, compared to the air-conditioning of conventional Gas-supplying enthalpy-increasing
Structure, air-conditioning system set the throttling arrangement 803 of second throttling device 802 and the 3rd advantage be：With operation of air conditioner refrigeration mould
As a example by formula, liquid refrigerants was arranged on First Heat Exchanger 1 and shwoot before flash evaporation 6 is flowed into by the First Heat Exchanger 1 of outdoor unit
The 3rd throttling arrangement 803 between device 6 can throttle to refrigerant one step ahead, reduce the pressure of refrigerant, be easy to flash evaporation 6 to incite somebody to action
Liquid refrigerants is evaporated to gaseous coolant, simultaneously as the temperature of refrigerant is lower, so refrigerant can also be increased at radiator 7
Heat exchange amount, in an embodiment of the present invention, by adjusting the aperture of first throttle device 801 and second throttling device 802, from
And flow of the refrigerant in cooling line 9 can be adjusted, can make to flow to the refrigerant of compressor 3 from first throttle device 801
Temperature and pressure, the temperature and pressure compared to the refrigerant that the 3rd throttling arrangement 803 is flowed to from First Heat Exchanger 1 is lower.
In flowing into cooling line 9 in the form of the gaseous coolant at the flash evaporation 6 due to operative liquid refrigerant, in order to ensure stream
The temperature and pressure for entering the First Heat Exchanger 1 of outdoor unit meet actual outdoor heat exchange demand, are arranged on the second heat exchanger 2 and dodge
Second throttling device 802 between hair device 6 can play a part of throttle expansion valve, the refrigerant for adjusting outflow flash evaporation 6
The parameter such as temperature and pressure.
Above-described embodiment be so that air-conditioning runs refrigeration mode under summer high temperature operating mode as an example, similarly, low temperature work in the winter time
Under condition, outdoor cryogenic conditions can influence the heat exchange amount of outdoor unit and outdoor environment, to ensure during air-conditioning system operation heating mode
Heating capacity, need also exist for performing compressor 3 Gas-supplying enthalpy-increasing operation, and in operation of air conditioner heating mode, refrigerant is in air-conditioning
Flow direction in pipeline is with refrigeration mode conversely, now, being arranged on the second throttling device between the second heat exchanger 2 and flash evaporation 6
802 can play throttling action of the 3rd throttling arrangement 803 under cooling condition, for throttling into the temperature of the refrigerant of flash evaporation 6
Degree and pressure and other parameters, and the 3rd throttling arrangement 803 then play a part of end expansion valve, for adjust flowed out from flash evaporation 6,
Flow into the parameters such as the temperature and pressure of refrigerant of First Heat Exchanger 1 of outdoor unit.To realize that the refrigerant under above two operating mode is adjusted
Section process, the throttling arrangement 803 of second throttling device of the present invention 802 and the 3rd is bidirectional throttling device.
The outdoor unit of air-conditioning system also includes the gas-liquid separator 10 for storing and being conveyed to compressor 3 refrigerant, compression
Machine 3 at least includes one stage of compression portion and secondary compressing portion, wherein, one stage of compression portion is cold for what is flowed into gas-liquid separator 10
Matchmaker carries out one stage of compression, and secondary compressing portion is used to carry out two-stage compression to refrigerant, and the refrigerant for exporting compressor 3 disclosure satisfy that room
The second heat exchanger of interior machine 2 externally exchanges heat required temperature and pressure.
In one embodiment of the invention, flash evaporation 6 is connected in series with the first pipeline 4, the primary structure bag of flash evaporation 6
The gaseous coolant portion that liquid refrigerants portion is connected with liquid refrigerants portion is included, wherein, liquid refrigerants portion has goes here and there with the first pipeline 4
Join the inlet and liquid outlet of connection, and first gas outlet in gaseous coolant portion, gaseous coolant portion are flowed to for gaseous coolant
Also there is the second gas outlet of connection cooling line 9.
Accordingly, radiator 7 has the entrance point and gas-liquid separator being connected with second gas outlet in gaseous coolant portion
The port of export that 10 air inlet is connected.
In another embodiment of the invention, flash evaporation 6 is connected in parallel with the first pipeline 4, and flash evaporation 6 corresponding first is managed
Stop valve is provided with the parallel transistor section on road 4, can be by controlling unlatching or the pass of first throttle device 801 and stop valve
Close, to turn on or block refrigerant pipeline and the corresponding parallel transistor section where flash evaporation 6, for example, can be by opening simultaneously
The stop valve in union section, closing first throttle device 801, make refrigerant be not passed through cooling line 9, it is adaptable to electrical control member caloric value
Less, temperature is maintained at the situation below safe working temperature, is also applied for operating mode of the compressor 3 without Gas-supplying enthalpy-increasing.
Form is connected in parallel simultaneously for above-mentioned flash evaporation 6, can also be by controlling first throttle device 801 and cutting
Only the flow aperture of valve, adjusts the coolant quantity of the second heat exchanger of inflow indoor set 2 and is mended for electrical control member radiating or compressor 3
The coolant quantity of gas increasing enthalpy, so that air-conditioning system integrally maintains optimal working condition.
Optionally, the first throttle device 801 in cooling component is arranged at the cooling tube between radiator 7 and compressor 3
On road 9, the refrigerant flow rate flow in cooling line 9 can be not only adjusted, additionally it is possible to play a part of expansion valve, to gaseous coolant
Second throttle is carried out, to reduce the temperature and pressure of refrigerant, such that it is able to improve compression effect of the compressor 3 to mixed refrigerant
Rate.
In one embodiment of the invention, air-conditioning system is provided with the first sensor for detecting indoor temperature, can
With indoor temperature regulation first throttle device 801 and the aperture of second throttling device 802 detected by basis, to meet to room
The coolant quantity demand that interior environment is exchanged heat.
As shown in Figure 4 and Figure 5, as a example by a chiller mode, refrigerant in the Air Conditioning Cycle flow process, its enthalpy and
The change procedure of entropy is：The refrigerant in state point K flows into compressor 3 from air entry in gas-liquid separator, via one-level pressure
Contracting portion and secondary compressing portion are the refrigerant in state point D by isentropic Compression, and are discharged from the exhaust outlet of compressor；Compressor 3
Refrigerant in state point D is input into the second heat exchanger 2, liquid point E is cooled to by indoor environment；Refrigerant is along the second heat exchanger 2
Outlet enter the first pipeline 4, by the isenthalpic throttling of second throttling device 802 to state point F, then flow into flash evaporation 6；From sudden strain of a muscle
The refrigerant for sending out the liquid outlet outflow in the liquid refrigerants portion of device 6 is in state point G, is throttled to state point I through the 3rd stream device 803,
It is changed into state point J after carrying out heat absorption evaporation into First Heat Exchanger 1, and is discharged from the outlet of First Heat Exchanger, then by the
Two pipelines 5 are back to gas-liquid separator 10, and now refrigerant is in state point A；Meanwhile, from the of the gaseous coolant portion of flash evaporation 6
Two gas outlets outflow gaseous coolant be in state point H, flow through parallel-flow heat exchanger and with electrical control member heat exchange after be changed into state point
C, afterwards refrigerant step-down cooling carried out by first throttle device 801 be changed into state point B, and with along the second pipeline 5 flow it is cold
Formed after matchmaker's mixing and be in the refrigerant of state point K inflow gas-liquid separator 10.
In the above-mentioned refrigerant circulation of the present invention, to realize reducing electrical control member cooling and compressor 3 Gas-supplying enthalpy-increasing, two mistakes
Journey interferes influence, can be by controlling first throttle device 801, second throttling device 802 and the 3rd throttling arrangement 803
Flow aperture realizes, for example, in the embodiment of above-mentioned diagram, the refrigerant flowed out from second heat exchanger 2 of indoor set is in warp
After crossing the throttling of second throttling device 802, refrigerant is changed into F from state point E, and its process is isenthalpic throttling, and the enthalpy of refrigerant is constant,
Pressure reduction, while entropy increases, temperature reduction；The refrigerant for flowing through first throttle device 801 is changed into state point B from state point C,
Its process is also isenthalpic throttling, and the enthalpy of refrigerant is constant, pressure reduction, while entropy increases, temperature reduction improves compressor 3
The efficiency of second-compressed is carried out to mixed refrigerant；The refrigerant of the 3rd throttling arrangement 803 is flowed to by state point G from flash evaporation 6
It is changed into state point I, its process is isenthalpic throttling, the enthalpy of refrigerant is constant, pressure reduction, while entropy increases, temperature reduction, from
And improve after refrigerant gets in the second heat exchanger 2 of machine, the cooling heat exchange with indoor environment.
In one embodiment of the invention, air-conditioning is provided with for detecting outdoor temperature and being arranged at the first of outdoor unit
The first sensor on the surface of heat exchanger 1, for detecting outdoor unit temperature and being arranged at the refrigerant exit pipeline of First Heat Exchanger 1
On second sensor, the 3rd sensor for detecting indoor temperature, for detect the 4th sensor of radiator temperature with
And for detecting the 5th sensor of delivery temperature, can according to detected temperature parameter regulation first throttle device 801,
The throttling arrangement 803 of second throttling device 802 and the 3rd so that air-conditioning is not in the case where indoor heat exchange efficiency is influenceed, increase or
Reduce for being exchanged heat with electrical control member and the cold medium flux of Gas-supplying enthalpy-increasing is carried out to compressor.
It should be appreciated that the invention is not limited in the flow and structure that are described above and be shown in the drawings,
And can without departing from the scope carry out various modifications and changes.The scope of the present invention is only limited by appended claim
System.
Claims (13)
1. a kind of control method of air-conditioning, it is characterised in that the control method includes：
Outdoor temperature threshold value and tonifying Qi temperature conditionss are obtained, wherein, the tonifying Qi temperature conditionss include flowing back to gas-liquid separator
The refrigerant radiator temperature corresponding when tonifying Qi temperature requirement is met；
Outdoor temperature, outdoor unit temperature and radiator temperature during acquisition operation of air conditioner heating mode；
It is not more than outdoor temperature threshold value in the outdoor temperature, and the outdoor unit temperature is when being not more than solidifying frost critical-temperature, with
The corresponding aperture of maximum stream flow adjusts the aperture of the first throttle device as the reference opening amount of first throttle device, makes institute
State radiator temperature and meet the tonifying Qi temperature conditionss.
2. control method according to claim 1, it is characterised in that the tonifying Qi temperature conditionss, including：
TRadiator=Tao+C,
Wherein, the TRadiatorIt is the radiator temperature, Tao is the outdoor temperature, C is temperature adjustment parameter, span is 3~
6℃。
3. control method according to claim 2, it is characterised in that
The tonifying Qi temperature conditionss also include the refrigerant for the flowing back to gas-liquid separator institute corresponding when tonifying Qi temperature requirement is met
State the delivery temperature of compressor；
The control method also includes：
Obtain the delivery temperature of the compressor；
According to the delivery temperature and delivery temperature threshold value, the flow aperture of first throttle device is adjusted, make the delivery temperature
Meet the tonifying Qi temperature conditionss.
4. control method according to claim 1, it is characterised in that also include：
According to the outdoor temperature, the solidifying white critical-temperature of environment described in the outdoor unit is determined.
5. control method according to claim 1, it is characterised in that also include：
When the outdoor unit temperature is more than solidifying frost critical-temperature, using the corresponding aperture of maximum stream flow as first throttle device
Reference opening amount, control reduces the flow aperture of the first throttle device；Or
It is described the outdoor temperature be more than outdoor temperature threshold value when, using the corresponding aperture of maximum stream flow as first throttle fill
The reference opening amount put, control reduces the flow aperture of the first throttle device.
6. control method according to claim 1, it is characterised in that the control method also includes：
Obtain the target indoor temperature of real-time indoor temperature and user's setting；
Temperature gap, the flow aperture of the first throttle device according to the real-time indoor temperature and target indoor temperature,
Adjust the flow aperture of the second throttling device and the 3rd throttling arrangement.
7. a kind of control device of air-conditioning, it is characterised in that the control device includes：
Acquiring unit, for obtaining outdoor temperature threshold value and tonifying Qi temperature conditionss, wherein, the tonifying Qi temperature conditionss include flowing back to
The refrigerant of the gas-liquid separator radiator temperature corresponding when tonifying Qi temperature requirement is met；And
For obtaining outdoor temperature acquired during operation of air conditioner heating mode, outdoor unit temperature and radiator temperature；
Main control unit, for being not more than outdoor temperature threshold value in the outdoor temperature, and the outdoor unit temperature is not more than solidifying frost
During critical-temperature, using the corresponding aperture of maximum stream flow as the reference opening amount of first throttle device, the first throttle dress is adjusted
The aperture put, makes the radiator temperature meet the tonifying Qi temperature conditionss.
8. control device according to claim 7, it is characterised in that the acquiring unit is used to obtain the tonifying Qi temperature
Condition, including：
TRadiator=Tao+C,
Wherein, the TRadiatorIt is the radiator temperature, Tao is the outdoor temperature, C is temperature adjustment parameter, span is 3~
6℃。
9. control device according to claim 8, it is characterised in that
The tonifying Qi temperature conditionss also include the refrigerant for the flowing back to gas-liquid separator institute corresponding when tonifying Qi temperature requirement is met
State the delivery temperature of compressor；
The acquiring unit is additionally operable to obtain the delivery temperature of the compressor detected during the operation of air conditioner heating mode；
The main control unit is used for according to the delivery temperature and delivery temperature threshold value, and the flow for adjusting first throttle device is opened
Degree, makes the delivery temperature meet the tonifying Qi temperature conditionss.
10. control device according to claim 7, it is characterised in that the main control unit is additionally operable to：
According to the outdoor temperature, the solidifying white critical-temperature of environment described in the outdoor unit is determined.
11. control devices according to claim 7, it is characterised in that the main control unit is additionally operable to：
When the outdoor unit temperature is more than solidifying frost critical-temperature, using the corresponding aperture of maximum stream flow as first throttle device
Reference opening amount, control reduces the flow aperture of the first throttle device；Or
It is described the outdoor temperature be more than outdoor temperature threshold value when, using the corresponding aperture of maximum stream flow as first throttle fill
The reference opening amount put, control reduces the flow aperture of the first throttle device.
12. control devices according to claim 7, it is characterised in that
The acquiring unit is used to obtain the target indoor temperature of real-time indoor temperature and user's setting；
The main control unit is used for temperature gap, the first throttle according to the real-time indoor temperature and target indoor temperature
The flow aperture of device, adjusts the flow aperture of the second throttling device and the 3rd throttling arrangement.
A kind of 13. air-conditionings of application control method as described in any one of claim 1-6, it is characterised in that the air-conditioning bag
Include the indoor set with the second heat exchanger, the outdoor unit with First Heat Exchanger, compressor and gas-liquid separator, the gas-liquid point
It is connected with the air entry of the compressor from the gas outlet of device, the electrical control member is located in the outdoor unit, and described first changes
Hot device, the second heat exchanger are connected with compressor by the first pipeline and the second pipeline, described for constituting refrigerant circulation circuit
Air-conditioning also includes cooling component, and the cooling component has flash evaporation, first throttle device and for for the electrical control member radiates
Radiator, wherein, the flash evaporation is connected on first pipeline, the radiator by cooling line respectively with it is described
The air inlet of gas-liquid separator, flash evaporation connection, the first throttle device are arranged on the gas-liquid separator and described
On the cooling line between radiator, the air-conditioning have be arranged between second heat exchanger and the flash evaporation
In second throttling device on first pipeline and the first pipeline being arranged between the First Heat Exchanger and the flash evaporation
The 3rd throttling arrangement, the air-conditioning be provided with for detect outdoor temperature first sensor, for detecting the outdoor unit
The second sensor of temperature, the 3rd sensor for detecting the indoor temperature, the 4th biography for detecting radiator temperature
Sensor and the 5th sensor for detecting delivery temperature.
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| CN201710064208.3A CN106839308B (en) | 2017-02-04 | 2017-02-04 | A kind of control method of air-conditioning, device and air-conditioning |
| PCT/CN2017/092933 WO2018141150A1 (en) | 2017-02-04 | 2017-07-14 | Control method and device for air conditioner, and air conditioner |
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| CN201710064208.3A CN106839308B (en) | 2017-02-04 | 2017-02-04 | A kind of control method of air-conditioning, device and air-conditioning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018141150A1 (en) * | 2017-02-04 | 2018-08-09 | 海尔集团公司 | Control method and device for air conditioner, and air conditioner |
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| CN106839308B (en) | 2019-07-23 |
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