CN106839308B - 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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- CN106839308B CN106839308B CN201710064208.3A CN201710064208A CN106839308B CN 106839308 B CN106839308 B CN 106839308B CN 201710064208 A CN201710064208 A CN 201710064208A CN 106839308 B CN106839308 B CN 106839308B
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- temperature
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- air
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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
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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
- F24F11/30—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
Abstract
The invention discloses a kind of control method of air-conditioning, device and air-conditionings, belong to air-conditioning technical field.Control method includes: to obtain outdoor temperature threshold value and tonifying Qi temperature condition；Obtain outdoor temperature, outdoor unit temperature and the radiator temperature when operation of air conditioner heating mode；It is not more than outdoor temperature threshold value in outdoor temperature, and when outdoor unit temperature is no more than solidifying white critical-temperature, adjusts the aperture of first throttling device, radiator temperature is made to meet tonifying Qi temperature condition.Control method of the invention can be when outdoor temperature be lower than solidifying white critical-temperature, first throttling device is opened in control, the refrigerant flowed out from indoor set heat exchanger is set to exchange heat by radiator with electric control element, waste heat so as to be generated using electric control element improves the thermic load of the refrigerant filled into, so that heat exchange after refrigerant can reach compressor Gas-supplying enthalpy-increasing needed for refrigerant state, improve the working performance of compressor.
Description
Technical field
The present invention relates to air-conditioning technical fields, more particularly to a kind of control method of air-conditioning, device and air-conditioning.
Background technique
Currently on the market determine frequency or convertible frequency air-conditioner product, air-conditioning is in winter in severe cold operational process, due to external environment
Temperature is too low, causes the heat exchange amount of outdoor unit heat exchanger and outdoor environment very few, so that indoor unit heating capacity is reduced, is not able to satisfy
The demand of heating, therefore generally require and Gas-supplying enthalpy-increasing operation is carried out to compressor, to reduce the delivery temperature of compressor, promoted 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 for the refrigerant that interior machine heat exchanger introduces tends not to the requirement for meeting Gas-supplying enthalpy-increasing, limits the compression efficiency of compressor.
Summary of the invention
The embodiment of the invention provides a kind of control method of air-conditioning, device and air-conditionings.For the embodiment to disclosure
Some aspects have a basic understanding, and simple summary is shown below.The summarized section is not extensive overview, nor wanting
It determines key/critical component or describes the protection scope 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: acquisition outdoor temp
Spend threshold value and tonifying Qi temperature condition, wherein tonifying Qi temperature condition includes flowing back to the refrigerant of gas-liquid separator to meet fill temperature
Degree radiator temperature corresponding when requiring；Obtain outdoor temperature, outdoor unit temperature and the heat dissipation when operation of air conditioner heating mode
Device temperature；It is not more than outdoor temperature threshold value in outdoor temperature, and when outdoor unit temperature is no more than solidifying white critical-temperature, with max-flow
Reference opening amount of the corresponding aperture as first throttling device is measured, the aperture of first throttling device is adjusted, expires radiator temperature
Sufficient tonifying Qi temperature condition.
Further, tonifying Qi temperature condition, comprising:
TRadiator=Tao+C,
Wherein, TRadiatorFor radiator temperature, Tao is outdoor temperature, and C is temperature adjustment parameter, and value range is 3~6 DEG C.
Further, tonifying Qi temperature condition further includes flowing back to the refrigerant of gas-liquid separator to meet tonifying Qi temperature requirement when institute
The delivery temperature of corresponding compressor；Control method further include: obtain the delivery temperature of compressor；According to delivery temperature and exhaust
Temperature threshold adjusts the flow aperture of first throttling device, and delivery temperature is made to meet tonifying Qi temperature condition.
Further, control method further include: according to outdoor temperature, determine the solidifying white critical-temperature of outdoor unit environment.
Further, control method further include: corresponding with maximum stream flow when outdoor unit temperature is greater than solidifying white critical-temperature
Reference opening amount of the aperture as first throttling device, control reduces the flow aperture of first throttling device；Or in outdoor temp
When degree is greater than outdoor temperature threshold value, using the corresponding aperture of maximum stream flow as the reference opening amount of first throttling device, control is reduced
The flow aperture of first throttling device.
Further, control method further include: obtain real-time room temperature and target indoor temperature set by user；According to
The flow aperture of the temperature gap of real-time room temperature and target indoor temperature, first throttling device, adjusts second throttling device
With the flow aperture of third throttling set.
According to the second aspect of the invention, a kind of control device of air-conditioning is additionally provided, control device includes: to obtain list
Member, for obtaining outdoor temperature threshold value and tonifying Qi temperature condition, wherein tonifying Qi temperature condition includes flowing back to gas-liquid separator
The refrigerant radiator temperature corresponding when meeting tonifying Qi temperature requirement；And it is obtained when for obtaining operation of air conditioner heating mode
Outdoor temperature, outdoor unit temperature and the radiator temperature taken；Main control unit, for being not more than outdoor temperature threshold in outdoor temperature
Value, and when outdoor unit temperature is no more than solidifying white critical-temperature, using the corresponding aperture of maximum stream flow as the base of first throttling device
Quasi- aperture adjusts the aperture of first throttling device, and radiator temperature is made to meet tonifying Qi temperature condition.
Further, acquiring unit is for obtaining tonifying Qi temperature condition, comprising:
TRadiator=Tao+C,
Wherein, TRadiatorFor radiator temperature, Tao is outdoor temperature, and C is temperature adjustment parameter, and value range is 3~6 DEG C.
Further, tonifying Qi temperature condition further includes flowing back to the refrigerant of gas-liquid separator to meet tonifying Qi temperature requirement when institute
The delivery temperature of corresponding compressor；Acquiring unit is also used to obtain the row of compressor acquired when operation of air conditioner heating mode
Temperature degree；Main control unit is used to adjust the flow aperture of first throttling device according to delivery temperature and delivery temperature threshold value, make to arrange
Temperature degree meets tonifying Qi temperature condition.
Further, main control unit is also used to: according to outdoor temperature, determining the solidifying white critical-temperature of outdoor unit environment.
Further, main control unit is also used to: corresponding with maximum stream flow when outdoor unit temperature is greater than solidifying white critical-temperature
Reference opening amount of the aperture as first throttling device, control reduces the flow aperture of first throttling device；Or in outdoor temp
When degree is greater than outdoor temperature threshold value, using the corresponding aperture of maximum stream flow as the reference opening amount of first throttling device, control is reduced
The flow aperture of first throttling device.
Further, acquiring unit is for obtaining real-time room temperature and target indoor temperature set by user；Master control list
Member is for according to the flow aperture of the temperature gap of real-time room temperature and target indoor temperature, first throttling device, adjusting the
The flow aperture of two throttling sets and third throttling set.
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 pass through the first pipeline and the second pipe
Road is connected, and for constituting refrigerant circulation circuit, air-conditioning further includes cooling component, and cooling component has flash evaporation, first throttle
Device and radiator for radiating for electrical control member, wherein flash evaporation is connected on the first pipeline, and radiator passes through cooling line
It is connected to respectively with the air inlet of gas-liquid separator, flash evaporation, first throttling device is arranged between gas-liquid separator and radiator
Cooling line on, air-conditioning have be set on the first pipeline between the second heat exchanger and flash evaporation second throttling device,
And it is set to the third throttling set on the first pipeline between First Heat Exchanger and flash evaporation, air-conditioning is provided with for detecting
The first sensor of outdoor temperature, the second sensor for detecting outdoor unit temperature, the third for detecting room temperature pass
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 lower than solidifying white critical-temperature, and first throttle dress is opened in control
It sets, the refrigerant flowed out from indoor set heat exchanger is enable to exchange heat by radiator with electric control element, so as to utilize electricity
The waste heat that control element generates improves the thermic load of the refrigerant filled into, so that the refrigerant after heat exchange can reach compressor Gas-supplying enthalpy-increasing
Required refrigerant state, improves the working performance of compressor.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present 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
Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.Herein, each embodiment individually or can be indicated generally with term " invention ", and it is convenient that this is used for the purpose of,
And if in fact disclosing the invention more than one, the range for being not meant to automatically limit the application is any single invention
Or inventive concept.Herein, relational terms such as first and second and the like be used only for by an entity or operation with
Another entity or operation distinguish, and without requiring or implying, there are any actual relationships between these entities or operation
Or sequence.Moreover, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, thus
So that process, method or equipment including a series of elements not only include those elements, but also including being not explicitly listed
Other element, or further include for this process, method or the intrinsic element of equipment.In the feelings not limited more
Under condition, the element that is limited by sentence "including a ...", it is not excluded that in process, method or equipment including the element
In there is also other identical elements.Each embodiment herein is described in a progressive manner, and each embodiment stresses
Be the difference from other embodiments, the same or similar parts in each embodiment may refer to each other.For implementing
For method, product etc. disclosed in example, since it is corresponding with method part disclosed in embodiment, so the comparison of description is simple
Single, reference may be made to the description of the method.
As depicted in figs. 1 and 2, the present invention provides a kind of control method of air-conditioning, control method includes:
S101, outdoor temperature threshold value and tonifying Qi temperature condition are obtained, wherein the tonifying Qi temperature condition includes flowing back to gas
The refrigerant of the liquid/gas separator radiator temperature corresponding when meeting tonifying Qi temperature requirement；
Control method of the present invention is to increase the thermic load of refrigerant using the waste heat of electric control element, and flow back to refrigerant after heat exchange
Compressor carries out Gas-supplying enthalpy-increasing, therefore while adjusting first throttling device to control refrigerant tonifying Qi temperature, should also make to radiate
Device temperature reaches corresponding tonifying Qi temperature condition, can sufficiently be exchanged heat, be supplemented with electric control element with flowing through the refrigerant of radiator
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 detects to obtain by being set to the first sensor on the outside of outdoor unit, outdoor unit temperature
It detects to obtain by being set to the second sensor inside outdoor unit, radiator temperature is by being set to the of heatsink fins on piece
Four sensors detect to obtain.Wherein, it will have a direct impact on its changing with outdoor environment due to coagulating frost on outdoor unit First Heat Exchanger
The thermal efficiency, therefore second sensor is set to the position of neighbouring First Heat Exchanger inside outdoor unit, and second sensor is surveyed
The temperature of the First Heat Exchanger obtained is as the parameter for judging whether to reach solidifying white critical-temperature in subsequent step；
S103, it is not more than outdoor temperature threshold value in outdoor temperature, and when outdoor unit temperature is no more than solidifying white critical-temperature,
Using the corresponding aperture of maximum stream flow as the reference opening amount of first throttling device, the aperture of first throttling device is adjusted, makes to radiate
Device temperature meets tonifying Qi temperature condition；
In embodiment, the present invention is using solidifying white critical-temperature as the ginseng for sentencing measurement compressor and whether needing Gas-supplying enthalpy-increasing
Number, in operation of air conditioner heating mode, the First Heat Exchanger of outdoor unit exchanges heat with its surrounding air, in First Heat Exchanger
Refrigerant heat absorption evaporation, causes the temperature of its surrounding air to reduce, and outdoor unit still will appear solidifying frost problem, thus outdoor temperature not
When greater than outdoor temperature threshold value, it is still necessary to judge whether outdoor unit temperature is greater than solidifying white critical-temperature；
In embodiment, when outdoor unit temperature is no more than solidifying white 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 carry out to compressor
Gas-supplying enthalpy-increasing operation is opened by control first throttling device in step s 103, flows refrigerant along cooling line, utilized
The waste heat of electric control element heats refrigerant, and refrigerant is enable to reach the refrigerant conditions dictate of Gas-supplying enthalpy-increasing.
In the above process, the aperture of first throttling device is improved from initial opening to the corresponding aperture of maximum stream flow or
First throttling device is controlled to open with the corresponding aperture of maximum stream flow, to improve the refrigerant entirety flow in cooling line, thus
Increase the heat exchange amount of refrigerant and electric control element, and then refrigerant is made to meet the refrigerant conditions dictate of Gas-supplying enthalpy-increasing；Simultaneously as automatically controlled
The temperature of element and radiator is also influenced by outdoor environment, in the process of control method of the present invention, is based on maximum stream flow pair
The aperture answered, to first throttling device carry out Secondary Control, make the heat transfer process of radiator and electric control element can continue into
Row.
In some embodiments, the step of tonifying Qi temperature condition is obtained in the present invention includes: to determine and mend according to outdoor temperature
Temperature degree condition, tonifying Qi temperature condition are as follows:
TRadiator=Tao+C,
Wherein, TRadiatorFor radiator temperature, Tao is outdoor temperature, and C is temperature adjustment parameter, and value range is 3~6 DEG C.This hair
In bright tonifying Qi temperature condition, radiator temperature is higher than outdoor temperature, it is possible to reduce since radiator temperature is lower 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 condition further includes that flow back to the refrigerant of the gas-liquid separator institute when meeting tonifying Qi temperature requirement right
The delivery temperature for the compressor answered；In order to which the refrigerant temperature for making the delivery temperature of compressor can satisfy outdoor unit heat exchanger is wanted
It asks, the step of control method of the invention further include:
The delivery temperature for obtaining compressor, in embodiment, delivery temperature is by being set at exhaust outlet of compressor position
The 4th sensor detect to obtain；
According to delivery temperature and delivery temperature threshold value, the flow aperture of first throttling device is adjusted, delivery temperature is met
Tonifying Qi temperature condition.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
For a temperature upper limit, when the delivery temperature of compressor is under the temperature upper limit, the temperature of refrigerant can satisfy room
The heat exchange demand of outer machine heat exchanger；Therefore the present invention adjusts the flow aperture of first throttling device, so that above-mentioned radiator temperature
Degree and delivery temperature are able to satisfy corresponding tonifying Qi temperature condition, to promote the operational efficiency of air-conditioning.
In one embodiment of the invention, control method further include: judging whether outdoor unit temperature is greater than solidifying frost and faces
Before boundary's temperature, according to outdoor temperature, the solidifying white critical-temperature of outdoor unit environment is determined.The season of the region as locating for air conditioner user
The factors such as section, weather, weather will lead to the variation of outdoor temperature, therefore frost critical-temperature to be achieved solidifying for outdoor unit,
Need to determine solidifying white critical-temperature according to measured outdoor temperature.
In one embodiment of the invention, control method further include: when outdoor unit temperature is greater than solidifying white critical-temperature,
Using the corresponding aperture of maximum stream flow as the reference opening amount of first throttling device, the flow that control reduces first throttling device is opened
Degree.
When outdoor unit temperature is greater than solidifying white critical-temperature, the heat exchange amount of outdoor unit and outdoor environment is influenced by outdoor temperature
Reduce, in order to guarantee 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
Reference opening amount of the corresponding aperture as first throttling device, control reduces the flow aperture of first throttling device, so that tonifying Qi
The refrigerant temperature of increasing enthalpy and the temperature of outdoor environment are adapted, for example, in one embodiment, the maximum stream flow of first throttling device
Corresponding aperture is 500B, and when outdoor unit temperature is greater than solidifying white critical-temperature, control first throttling device is opened with medium aperture
It opens, specifically, the aperture of first throttling device is reduced to 220B from 500B.
Similarly, it when outdoor temperature is greater than outdoor temperature threshold value, is filled using the corresponding aperture of maximum stream flow as first throttle
The reference opening amount set, control reduce the flow aperture of first throttling device, to make the refrigerant temperature and outdoor ring of Gas-supplying enthalpy-increasing
The temperature in border is adapted.
In one embodiment of the invention, control method further include:
Obtain real-time room temperature and target indoor temperature set by user；
According to the temperature gap of real-time room temperature and target indoor temperature, the flow aperture of first throttling device, adjust
The flow aperture of second throttling device and third throttling set.
In embodiment, the first pipeline as where can be considered with third throttling set first throttling device is connected in parallel,
Therefore, the cold medium flux for flowing through second throttling device be flow through first throttling device and third throttling set cold medium flux it
With, therefore can determine that needing to flow to indoor unit second exchanges heat by the temperature gap of real-time room temperature and target indoor temperature
The cold medium flux of device, this cold medium flux are adapted with the flow aperture of third throttling throttling set；Later, second throttling device
Cold medium flux can be added to obtain by the cold medium flux of first throttling device with the cold medium flux of third throttling set, and then according to
The cold medium flux of two throttling sets determines its flow aperture.
The present invention also provides a kind of control devices of air-conditioning, and the control device is using the control disclosed in above-described embodiment
Method processed controls air-conditioning accordingly, and control device includes:
Acquiring unit, for obtaining outdoor temperature threshold value and tonifying Qi temperature condition, wherein tonifying Qi temperature condition includes stream
The refrigerant of the return-air liquid/gas separator radiator temperature corresponding when meeting tonifying Qi temperature requirement；And
Outdoor temperature, outdoor unit temperature and radiator temperature detected when for obtaining operation of air conditioner heating mode；
Main control unit, for it is solidifying to judge whether outdoor unit temperature is greater than when outdoor temperature is not more than outdoor temperature threshold value
White critical-temperature；And when outdoor unit temperature is no more than solidifying white critical-temperature, using the corresponding aperture of maximum stream flow as first
The reference opening amount of throttling set adjusts the aperture of first throttling device, and radiator temperature is made to meet tonifying Qi temperature condition.
In some embodiments, acquiring unit is for obtaining tonifying Qi temperature condition, comprising: according to outdoor temperature, determines and mends
Temperature degree condition, tonifying Qi temperature condition are as follows:
TRadiator=Tao+C,
Wherein, TRadiatorFor radiator temperature, Tao is outdoor temperature, and C is temperature adjustment parameter, and value range is 3~6 DEG C.
In some embodiments, tonifying Qi temperature condition further includes flowing back to the refrigerant of gas-liquid separator to want meeting tonifying Qi temperature
The delivery temperature of corresponding compressor when asking；Acquiring unit is also used to obtain compression detected when 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 throttling device is opened
Degree, makes delivery temperature meet tonifying Qi temperature condition.
In some embodiments, main control unit is also used to: judge outdoor unit temperature whether be greater than solidifying white critical-temperature it
Before, according to outdoor temperature, determine the solidifying white critical-temperature of outdoor unit environment.
In some embodiments, main control unit is also used to: when outdoor unit temperature is greater than solidifying white critical-temperature, with max-flow
Reference opening amount of the corresponding aperture as first throttling device is measured, control reduces the flow aperture of first throttling device.
In some embodiments, acquiring unit is for obtaining real-time room temperature and target indoor temperature set by user；
Main control unit is used for the flow aperture according to the temperature gap of real-time room temperature and target indoor temperature, first throttling device,
Adjust the flow aperture of second throttling device and third throttling set.
Air conditioner structure applied by control method and control device in above-described embodiment is as shown in figure 3, the air-conditioning system
Including indoor unit and outdoor unit, wherein indoor unit includes the second heat exchanger 2 to exchange heat with indoor environment, and outdoor unit includes
The First Heat Exchanger 1 that exchanges heat with outdoor environment, for providing the compressor 3 of circulation power, computer board, single-chip microcontroller for refrigerant
Etc. electrical control members be set in outdoor unit, First Heat Exchanger 1, the second heat exchanger 2 and compressor 3 pass through 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 after outdoor environment heat exchange is flowed out out of First Heat Exchanger 1, flows into First Heat Exchanger 1 via the second pipeline 5, meanwhile,
It is flowed out with the refrigerant after indoor environment heat exchange from the second heat exchanger 2, First Heat Exchanger 1 is flowed into via the first pipeline 4, by this
Refrigerant circulation process, it can be achieved that air-conditioning system to the refrigeration cool-down function of indoor environment.Similarly, heating mode is run in winter
When, refrigerant flows between First Heat Exchanger 1 and the second heat exchanger 2 along the direction opposite with refrigeration mode.Air-conditioning system can be achieved
Heating heating function of the system to indoor environment.
In addition to above-mentioned conventional refrigerant circulation circuit, air-conditioning system of the invention further includes cooling tube group, for solving electricity
Temperature excessively high problem when control works.
Specifically, cooling tube group mainly includes 9 two parts of cooling component and cooling line, wherein cooling component is mainly wrapped
It includes:
Flash evaporation 6, flash evaporation 6 are connected on the first pipeline 4, the operative liquid refrigerant for flowing through the first pipeline 4 can be steamed
Hair is gaseous coolant, and gaseous coolant is delivered in cooling line 9, thus subsequent as cooling line 9 using gaseous coolant
Heat transferring medium in cooling procedure；
First throttling device 801 is set on the first pipeline 4, for adjusting stream of the gaseous coolant in cooling line 9
Amount, and the pressure and the temperature that adjust the refrigerant after electrical control member heat exchange etc., so that pressure can be met by flowing into the refrigerant of compressor 3
The needs of 3 Gas-supplying enthalpy-increasing of contracting machine；
Radiator 7, radiator 7 is connected on cooling line 9 and neighbouring electrical control member is arranged, since electrical control member is arranged in mostly
In the semienclosed containers such as electric-controlled box, therefore radiator 7 can be used as the heat-exchange carrier of gaseous coolant Yu electrical control member surrounding air, lead to
Cross and cool down to the surrounding air of electric control element, so can by the temperature of electrical control member itself control safe working temperature with
Under.The specific structure and type of radiator 7 can be arranged on cooling line 9 in embodiment according to the structure determination of outdoor unit
7 type of radiator is advection heat exchanger, and advection heat exchanger has many advantages, such as that heat transfer rate is high, space hold is small, it is tight to be suitable for structure
The air conditioner outdoor unit structure gathered.
For sequence of flow of the refrigerant for electrical control member radiating and cooling in cooling tube group are as follows: first 4 → flash evaporation of pipeline 6
7 → gas-liquid separator of → radiator, 10 → compressor 3, first throttling device 801 can according to need setting in flash evaporation 6 and pressure
On cooling line 9 between contracting machine 3.
It is mostly 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 parameters such as temperature and pressure of refrigerant do not have too big variation, and in air-conditioning system of the invention, stream
The temperature of gaseous coolant through radiator 7 increases, pressure increases, therefore reduces the subsequent compression efficiency to refrigerant of compressor 3, is
Solve the problems, such as this, in one embodiment of the invention, air-conditioning system further includes second throttling device 802 and third throttling dress
Set 803, wherein second throttling device 802 is set on the first pipeline 4 between the second heat exchanger 2 and flash evaporation 6, third section
Stream device 803 is set 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
The advantages of structure, air-conditioning system setting second throttling device 802 and third throttling set 803, is: with operation of air conditioner refrigeration mould
For formula, liquid refrigerants is arranged before flowing into flash evaporation 6 by the First Heat Exchanger 1 of outdoor unit in First Heat Exchanger 1 and shwoot
Third throttling set 803 between device 6 can one step ahead throttle to refrigerant, reduce the pressure of refrigerant, be convenient for flash evaporation 6 will
Liquid refrigerants is evaporated to gaseous coolant, simultaneously as the temperature of refrigerant is lower, so can also increase refrigerant at radiator 7
Heat exchange amount, in an embodiment of the present invention, by adjust first throttling device 801 and second throttling device 802 aperture, from
And flow of the adjustable refrigerant in cooling line 9, the refrigerant that compressor 3 is flowed to from first throttling device 801 can be made
Temperature and pressure, the temperature and pressure compared to the refrigerant for flowing to third throttling set 803 from First Heat Exchanger 1 are lower.
Since operative liquid refrigerant is flowed into cooling line 9 in the form of gaseous coolant at flash evaporation 6, in order to guarantee to flow
The temperature and pressure for entering the First Heat Exchanger 1 of outdoor unit meet actual outdoor heat exchange demand, and setting is in the second heat exchanger 2 and dodges
Second throttling device 802 between hair device 6 can play the role of throttle expansion valve, for adjusting the refrigerant of outflow flash evaporation 6
The parameters such as temperature and pressure.
Above-described embodiment is for running refrigeration mode under summer high temperature operating condition by air-conditioning, similarly, low temperature work in winter
Under condition, outdoor cryogenic conditions will affect the heat exchange amount of outdoor unit and outdoor environment, when to guarantee that air-conditioning system runs heating mode
Heating capacity, also need to execute compressor 3 Gas-supplying enthalpy-increasing operation, and in operation of air conditioner heating mode, refrigerant is in air-conditioning
Flow direction and refrigeration mode in pipeline is on the contrary, at this point, be arranged in the second throttling device between the second heat exchanger 2 and flash evaporation 6
802 can play throttling action of the third throttling set 803 under cooling condition, the temperature for throttling into the refrigerant of flash evaporation 6
Degree and pressure and other parameters, and third throttling set 803 then plays the role of ending expansion valve, flows out for adjusting 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 the refrigerant tune under above two operating condition
Section process, second throttling device 802 of the present invention and third throttling set 803 are bidirectional throttling device.
The outdoor unit of air-conditioning system further includes the gas-liquid separator 10 for storing and conveying to compressor 3 refrigerant, compression
Machine 3 includes at least one stage of compression portion and secondary compressing portion, wherein one stage of compression portion is cold for being 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 can satisfy room
Interior the second heat exchanger of machine 2 externally exchanges heat required temperature and pressure.
In one embodiment of the invention, flash evaporation 6 and the first pipeline 4 are connected in series, the primary structure packet of flash evaporation 6
The gaseous coolant portion for including liquid refrigerants portion, being connected with liquid refrigerants portion, wherein liquid refrigerants portion has goes here and there with the first pipeline 4
Join the inlet and liquid outlet of connection, and flows to first gas outlet in gaseous coolant portion, gaseous coolant portion for gaseous coolant
Also there is the second gas outlet of connection cooling line 9.
Correspondingly, radiator 7 has the input end and gas-liquid separator being connected with second gas outlet in gaseous coolant portion
The outlet end 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
It is provided with shut-off valve on the parallel transistor section on road 4, unlatching or the pass of control first throttling device 801 and shut-off valve can be passed through
It closes, to be connected or block refrigerant pipeline and the corresponding parallel transistor section where flash evaporation 6, for example, can be by opening simultaneously
The shut-off valve in union section closes first throttling device 801, and refrigerant is made to be not passed through cooling line 9, is suitable for electrical control member calorific value
Less, temperature is maintained at the situation of safe working temperature or less, is also applied for the operating condition that compressor 3 is not necessarily to Gas-supplying enthalpy-increasing.
Meanwhile form is connected in parallel for above-mentioned flash evaporation 6, it by control first throttling device 801 and can also cut
The only flow aperture of valve adjusts the coolant quantity for flowing into the second heat exchanger of indoor unit 2 and mends for electrical control member heat dissipation or compressor 3
The coolant quantity of gas increasing enthalpy, so that air-conditioning system integrally maintains optimal working condition.
Optionally, the first throttling device 801 in cooling component is set to the cooling tube between radiator 7 and compressor 3
On road 9, the not only refrigerant flow rate flow in adjustable cooling line 9, additionally it is possible to play the role of expansion valve, to gaseous coolant
Second throttle is carried out, to reduce the temperature and pressure of refrigerant, is imitated so as to improve compressor 3 to the compression of mixed refrigerant
Rate.
In one embodiment of the invention, air-conditioning system is provided with the first sensor for detecting room temperature, can
To adjust the aperture of first throttling device 801 and second throttling device 802 according to detected room temperature, to meet to room
The coolant quantity demand that interior environment exchanges heat.
As shown in Figure 4 and Figure 5, in a chiller mode, refrigerant in the Air Conditioning Cycle flow process, enthalpy and
The change procedure of entropy are as follows: the refrigerant in gas-liquid separator in state point K flows into compressor 3 from air entry, via level-one 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 inputted 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 802 isenthalpic throttling of second throttling device 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, throttles through third stream device 803 to state point I,
Become state point J after carrying out heat absorption evaporation into First Heat Exchanger 1, and be discharged from the outlet of First Heat Exchanger, then by the
Two pipelines 5 are back to gas-liquid separator 10, and refrigerant is in state point A at this time；Meanwhile from the of the gaseous coolant portion of flash evaporation 6
Two gas outlets outflow gaseous coolant is in state point H, becomes state point after flowing through parallel-flow heat exchanger and exchanging heat with electrical control member
C, refrigerant, which carries out decompression cooling by first throttling device 801, later becomes state point B, and cold with flowing along the second pipeline 5
The refrigerant in state point K is formed after matchmaker's mixing to flow into gas-liquid separator 10.
In the above-mentioned refrigerant circulation of the present invention, electrical control member cooling and 3 Gas-supplying enthalpy-increasing of compressor, two mistakes are reduced to realize
Journey interferes with each other influence, can pass through control first throttling device 801, second throttling device 802 and third throttling set 803
Flow aperture is realized, for example, the refrigerant flowed out from the second heat exchanger 2 of indoor unit is passing through in the embodiment of above-mentioned diagram
After crossing the throttling of second throttling device 802, refrigerant becomes F from state point E, and process is isenthalpic throttling, and the enthalpy of refrigerant is constant,
Pressure reduction, while entropy increases, temperature reduces；The refrigerant for flowing through first throttling device 801 becomes 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, and temperature reduces, and improves compressor 3
The efficiency of second-compressed is carried out to mixed refrigerant；The refrigerant of third throttling set 803 is flowed to by state point G from flash evaporation 6
Becoming state point I, process is isenthalpic throttling, and the enthalpy of refrigerant is constant, pressure reduction, while entropy increases, and temperature reduces, from
And the cooling heat exchange after improving the second heat exchanger 2 that refrigerant enters the room machine, with indoor environment.
In one embodiment of the invention, air-conditioning is provided with for detecting outdoor temperature and being set to the first of outdoor unit
The first sensor on the surface of heat exchanger 1, for detecting outdoor unit temperature and being set to the refrigerant exit pipeline of First Heat Exchanger 1
On second sensor, the 3rd sensor for detecting room temperature, for detect the 4th sensor of radiator temperature with
And the 5th sensor for detecting delivery temperature, can according to detected temperature parameter adjust first throttling device 801,
Second throttling device 802 and third throttling set 803 so that air-conditioning is in the case where influencing indoor heat exchange efficiency, increase or
Reduce the cold medium flux for Gas-supplying enthalpy-increasing to be exchanged heat and carried out to compressor with electrical control member.
It should be understood that the invention is not limited to the process and structure that are described above and are shown in the accompanying drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by the attached claims
System.
Claims (13)
1. a kind of control method of air-conditioning, which is characterized in that the air-conditioning includes indoor unit with the second heat exchanger, has the
The outdoor unit of one heat exchanger, compressor and gas-liquid separator, the air-breathing of the gas outlet of the gas-liquid separator and the compressor
Mouth is connected, and electrical control member is equipped in the outdoor unit, and the First Heat Exchanger, the second heat exchanger and compressor pass through the first pipeline
It is connected with the second pipeline, for constituting refrigerant circulation circuit, the air-conditioning further includes cooling component, and the cooling component has
Flash evaporation, first throttling device and the radiator for radiating for the electrical control member, wherein the flash evaporation is connected to described
On one pipeline, the radiator is connected to the air inlet of the gas-liquid separator, the flash evaporation respectively by cooling line, institute
It states on the cooling line that first throttling device is arranged between the gas-liquid separator and the radiator, the air-conditioning tool
There is the second throttling device on the first pipeline being set between second heat exchanger and the flash evaporation and is set to institute
The third throttling set on the first pipeline between First Heat Exchanger and the flash evaporation is stated, the air-conditioning is provided with for detecting
The first sensor of outdoor temperature, the second sensor for detecting the outdoor unit temperature, for detecting room temperature
Three sensors, the 4th sensor for detecting radiator temperature and the 5th sensor for detecting delivery temperature；
The control method includes:
Obtain outdoor temperature threshold value and tonifying Qi temperature condition, wherein the tonifying Qi temperature condition includes flowing back to gas-liquid separator
The refrigerant radiator temperature corresponding when meeting tonifying Qi temperature requirement；
Obtain outdoor temperature, outdoor unit temperature and the radiator temperature when operation of air conditioner heating mode；
It is not more than outdoor temperature threshold value in the outdoor temperature, and when the outdoor unit temperature is no more than solidifying white critical-temperature, with
Reference opening amount of the corresponding aperture of maximum stream flow as first throttling device, adjusts the aperture of the first throttling device, makes institute
It states radiator temperature and meets the tonifying Qi temperature condition.
2. control method according to claim 1, which is characterized in that the tonifying Qi temperature condition, comprising:
TRadiator=Tao+C,
Wherein, the TRadiatorFor the radiator temperature, Tao is the outdoor temperature, and C is temperature adjustment parameter, value range is 3~
6℃。
3. control method according to claim 2, which is characterized in that
The tonifying Qi temperature condition further includes flowing back to the refrigerant institute corresponding when meeting tonifying Qi temperature requirement of gas-liquid separator
State the delivery temperature of compressor；
The control method further include:
Obtain the delivery temperature of the compressor；
According to the delivery temperature and delivery temperature threshold value, the flow aperture of first throttling device is adjusted, the delivery temperature is made
Meet the tonifying Qi temperature condition.
4. control method according to claim 1, which is characterized in that further include:
According to the outdoor temperature, the solidifying white critical-temperature of the outdoor unit local environment is determined.
5. control method according to claim 1, which is characterized in that further include:
When the outdoor unit temperature is greater than solidifying white critical-temperature, using the corresponding aperture of maximum stream flow as first throttling device
Reference opening amount, control reduce the flow aperture of the first throttling device；Or
When the outdoor temperature is greater than outdoor temperature threshold value, using the corresponding aperture of maximum stream flow as the base of first throttling device
Quasi- aperture, control reduce the flow aperture of the first throttling device.
6. control method according to claim 1, which is characterized in that the control method further include:
Obtain real-time room temperature and target indoor temperature set by user；
According to the temperature gap of the real-time room temperature and target indoor temperature, the flow aperture of the first throttling device,
Adjust the flow aperture of the second throttling device and third throttling set.
7. a kind of control device of air-conditioning, which is characterized in that the air-conditioning includes indoor unit with the second heat exchanger, has the
The outdoor unit of one heat exchanger, compressor and gas-liquid separator, the air-breathing of the gas outlet of the gas-liquid separator and the compressor
Mouth is connected, and electrical control member is equipped in the outdoor unit, and the First Heat Exchanger, the second heat exchanger and compressor pass through the first pipeline
It is connected with the second pipeline, for constituting refrigerant circulation circuit, the air-conditioning further includes cooling component, and the cooling component has
Flash evaporation, first throttling device and the radiator for radiating for the electrical control member, wherein the flash evaporation is connected to described
On one pipeline, the radiator is connected to the air inlet of the gas-liquid separator, the flash evaporation respectively by cooling line, institute
It states on the cooling line that first throttling device is arranged between the gas-liquid separator and the radiator, the air-conditioning tool
There is the second throttling device on the first pipeline being set between second heat exchanger and the flash evaporation and is set to institute
The third throttling set on the first pipeline between First Heat Exchanger and the flash evaporation is stated, the air-conditioning is provided with for detecting
The first sensor of outdoor temperature, the second sensor for detecting the outdoor unit temperature, for detecting room temperature
Three sensors, the 4th sensor for detecting radiator temperature and the 5th sensor for detecting delivery temperature；
The control device includes:
Acquiring unit, for obtaining outdoor temperature threshold value and tonifying Qi temperature condition, wherein the tonifying Qi temperature condition includes flowing back to
The refrigerant of the gas-liquid separator radiator temperature corresponding when meeting tonifying Qi temperature requirement；And
Acquired outdoor temperature, outdoor unit temperature and radiator temperature when for obtaining operation of air conditioner heating mode；
Main control unit, for being not more than outdoor temperature threshold value in the outdoor temperature, and the outdoor unit temperature is no more than solidifying frost
When critical-temperature, using the corresponding aperture of maximum stream flow as the reference opening amount of first throttling device, the first throttle dress is adjusted
The aperture set makes the radiator temperature meet the tonifying Qi temperature condition.
8. control device according to claim 7, which is characterized in that the acquiring unit is for obtaining the tonifying Qi temperature
Condition, comprising:
TRadiator=Tao+C,
Wherein, the TRadiatorFor the radiator temperature, Tao is the outdoor temperature, and C is temperature adjustment parameter, value range is 3~
6℃。
9. control device according to claim 8, which is characterized in that
The tonifying Qi temperature condition further includes flowing back to the refrigerant institute corresponding when meeting tonifying Qi temperature requirement of gas-liquid separator
State the delivery temperature of compressor；
The acquiring unit is also used to obtain the delivery temperature of compressor detected when 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 throttling device is opened
Degree, makes the delivery temperature meet the tonifying Qi temperature condition.
10. control device according to claim 7, which is characterized in that the main control unit is also used to:
According to the outdoor temperature, the solidifying white critical-temperature of the outdoor unit local environment is determined.
11. control device according to claim 7, which is characterized in that the main control unit is also used to:
When the outdoor unit temperature is greater than solidifying white critical-temperature, using the corresponding aperture of maximum stream flow as first throttling device
Reference opening amount, control reduce the flow aperture of the first throttling device；Or
When the outdoor temperature is greater than outdoor temperature threshold value, using the corresponding aperture of maximum stream flow as the base of first throttling device
Quasi- aperture, control reduce the flow aperture of the first throttling device.
12. control device according to claim 7, which is characterized in that
The acquiring unit is for obtaining real-time room temperature and target indoor temperature set by user；
The main control unit is used for according to the temperature gap of the real-time room temperature and target indoor temperature, the first throttle
The flow aperture of device adjusts the flow aperture of the second throttling device and third throttling set.
13. a kind of air-conditioning of application control method as described in any one of claim 1-6, which is characterized in that the air-conditioning packet
Include the indoor unit with the second heat exchanger, the outdoor unit with First Heat Exchanger, compressor and gas-liquid separator, the gas-liquid point
Be connected from the gas outlet of device with the air entry of the compressor, in the outdoor unit be equipped with electrical control member, the First Heat Exchanger,
Second heat exchanger is connected with compressor by the first pipeline and the second pipeline, for constituting refrigerant circulation circuit, the air-conditioning
It further include cooling component, the cooling component has flash evaporation, first throttling device and dissipates for what is radiated for the electrical control member
Hot device, wherein the flash evaporation is connected on first pipeline, the radiator by cooling line respectively with the gas-liquid
The air inlet of separator, flash evaporation connection, the first throttling device are arranged in the gas-liquid separator and the heat dissipation
On the cooling line between device, the air-conditioning has first be set between second heat exchanger and the flash evaporation
Second throttling device on pipeline and on the first pipeline being set between the First Heat Exchanger and the flash evaporation
Three throttling sets, the air-conditioning are provided with first sensor for detecting outdoor temperature, for detecting the outdoor unit temperature
Second sensor, the 3rd sensor for detecting room temperature, the 4th sensor for detecting radiator temperature and
For detecting the 5th sensor of 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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| CN106839308B true CN106839308B (en) | 2019-07-23 |
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| CN104567099A (en) * | 2014-12-22 | 2015-04-29 | 广东美的制冷设备有限公司 | Air conditioner |
| CN104896785A (en) * | 2015-05-15 | 2015-09-09 | 广东美的暖通设备有限公司 | Enhanced vapor injection multi-online air conditioning system and control method thereof |
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| CN105737423A (en) * | 2016-04-29 | 2016-07-06 | 广东美的制冷设备有限公司 | Cooling-heating air conditioner and control method thereof |
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| KR200463567Y1 (en) * | 2008-02-22 | 2012-11-13 | 삼성전자주식회사 | Airconditioner |
| KR20100096857A (en) * | 2009-02-25 | 2010-09-02 | 엘지전자 주식회사 | Air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104567099A (en) * | 2014-12-22 | 2015-04-29 | 广东美的制冷设备有限公司 | Air conditioner |
| CN104896785A (en) * | 2015-05-15 | 2015-09-09 | 广东美的暖通设备有限公司 | Enhanced vapor injection multi-online air conditioning system and control method thereof |
| CN204963284U (en) * | 2015-08-20 | 2016-01-13 | 广东美的制冷设备有限公司 | Changes in temperature type air conditioning system and single cold mould air conditioning system |
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