CN110513768A - A kind of heat exchanger, heat exchanger control method and device, air-conditioning - Google Patents
A kind of heat exchanger, heat exchanger control method and device, air-conditioning Download PDFInfo
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- CN110513768A CN110513768A CN201910818156.3A CN201910818156A CN110513768A CN 110513768 A CN110513768 A CN 110513768A CN 201910818156 A CN201910818156 A CN 201910818156A CN 110513768 A CN110513768 A CN 110513768A
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- 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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
This application discloses a kind of heat exchanger control method and device, are related to field of household appliances, for reducing micro-channel heat exchanger sweating frosting.It include: finned tube exchanger component, Thermal Performance of Micro Channels device assembly；Finned tube exchanger component, specifically includes: finned tube exchanger, the first tracheae and the first liquid pipe；Thermal Performance of Micro Channels device assembly, specifically includes: micro-channel heat exchanger, the second tracheae and the second liquid pipe；The air inlet in air duct where finned tube exchanger component is positioned close to, the air inlet in air duct where Thermal Performance of Micro Channels device assembly is arranged far from；The first end of first tracheae and the second tracheae is connected to the main tracheae of air-conditioner outdoor unit, and second end is respectively connected to finned tube exchanger and micro-channel heat exchanger；The first end of first liquid pipe and the second liquid pipe is connected to the main hydraulic pipe of air-conditioner outdoor unit, and second end is respectively connected to finned tube exchanger and micro-channel heat exchanger.The embodiment of the present application is applied in air-conditioner outdoor unit.
Description
Technical field
This application involves field of air conditioning more particularly to a kind of heat exchangers, heat exchanger control method and device, air-conditioning.
Background technique
As household electric appliances develop, each manufacturer is more and more in order to obtain biggish price and quality-advantage
Use performance is higher and the lower components of cost.
For air conditioner industry, micro-channel heat exchanger is due to the advantages such as low in cost, the coefficient of heat transfer is high, more and more
It is used by all big enterprises.But due to this body structure of micro-channel heat exchanger, cause its draining, Rong Shuan performance more than
Finned tube exchanger is poor, and then leads to micro-channel heat exchanger performance degradation is quickly under the unsteady dryings such as condensation, frosting.
Current solution be using blade inserting micro-channel heat exchanger, in one implementation, blade inserting microchannel
Heat exchanger uses monoblock type fin structure, can improve the drainage performance of fin to a certain extent.
But blade inserting micro-channel heat exchanger as evaporator in use, can still be coagulated on blade inserting micro-channel heat exchanger
More water or frost are tied, windage is increased, leads to blade inserting micro-channel heat exchanger reduced performance.Although blade inserting microchannel is changed
Hot device improves the ability of its draining, Rong Shuan to a certain extent, but flat there is no micro-channel heat exchanger is fundamentally solved
The problem of pipe water.
Summary of the invention
Embodiments herein provides a kind of heat exchanger, heat exchanger control method and device, air-conditioning, for reducing microchannel
Heat exchanger surface condensate frosting.
In order to achieve the above objectives, embodiments herein adopts the following technical scheme that
In a first aspect, providing a kind of heat exchanger, which includes:
A kind of heat exchanger is applied to air-conditioner outdoor unit characterized by comprising finned tube exchanger component, microchannel are changed
Hot device assembly；Finned tube exchanger component, specifically includes: finned tube exchanger, the first tracheae and the first liquid pipe；Thermal Performance of Micro Channels
Device assembly specifically includes: micro-channel heat exchanger, the second tracheae and the second liquid pipe；The first end of first tracheae is connected to air conditioning chamber
The main tracheae of outer machine, the second end of the first tracheae are connected to finned tube exchanger；The first end of second tracheae is connected to air conditioning chamber
The main tracheae of outer machine, the second end of the second tracheae are connected to micro-channel heat exchanger；The first end of first liquid pipe is connected to air conditioning chamber
The second end of the main hydraulic pipe of outer machine, the first liquid pipe is connected to finned tube exchanger；The first end of second liquid pipe is connected to air conditioning chamber
The second end of the main hydraulic pipe of outer machine, the second liquid pipe is connected to micro-channel heat exchanger；Finned tube exchanger component is close to the air-conditioning
The inlet side in outdoor unit air duct, air side of the Thermal Performance of Micro Channels device assembly close to the air duct.
Second aspect provides a kind of heat exchanger control method, flows through the first tracheae and the second gas this method comprises: obtaining
The degree of superheat of tube refrigerant；According to the degree of superheat for flowing through the first tracheae and the second tracheae inner refrigerant, adjusts flow and adjust dress
The opening size set.
The third aspect, provides a kind of heat exchanger control device, which includes: acquiring unit and control unit；It obtains
Unit, for obtaining the degree of superheat for flowing through the first tracheae and the second tracheae inner refrigerant；Control unit, for being obtained in acquiring unit
After taking the degree of superheat for flowing through the first tracheae and the second tracheae inner refrigerant, intratracheally freeze according to the first tracheae and second is flowed through
The degree of superheat of agent adjusts the opening size of flow regulator.
Fourth aspect provides a kind of air-conditioning, which includes: the heat exchanger that above-mentioned first aspect provides or above-mentioned the
The heat exchanger control device that three aspects provide.
The heat exchanger of embodiments herein offer, heat exchanger control method and device, air-conditioning, so that air-conditioner outdoor unit wind
The wind that machine generates first passes around finned tube exchanger, and the moisture in air liquefies on finned tube exchanger surface, utilizes finned tube
The excellent drainage performance of heat exchanger, moisture is discharged, and then air utilizes Thermal Performance of Micro Channels using micro-channel heat exchanger surface
The excellent heat exchange property of device makes refrigerant and air in air-conditioning carry out heat exchange.Scheme provided by the present application takes full advantage of
The advantage of finned tube exchanger and micro-channel heat exchanger, while compensating for the deficiency of micro-channel heat exchanger.
Detailed description of the invention
Fig. 1 is a kind of air conditioning structure diagram that embodiments herein provides；
Fig. 2 is a kind of heat exchanger structure schematic diagram that embodiments herein provides；
Fig. 3 is a kind of heat exchanger control method flow diagram one that embodiments herein provides；
Fig. 4 is a kind of heat exchanger control method flow diagram two that embodiments herein provides；
Fig. 5 is a kind of degree of superheat control flow schematic diagram that embodiments herein provides；
Fig. 6 is a kind of simple Air Conditioning Cycle schematic diagram that embodiments herein provides；
Fig. 7 is a kind of heat exchanger control device schematic diagram that embodiments herein provides；
Fig. 8 is a kind of underload control flow schematic diagram that embodiments herein provides；
Fig. 9 is the structural schematic diagram of another heat exchanger control device provided by the embodiments of the present application；
Figure 10 is the structural schematic diagram of another heat exchanger control device provided by the embodiments of the present application.
10- finned tube exchanger, the first liquid pipe of 11-, the first tracheae of 12-, 13- electric expansion valve, 14- sensor, 20- are micro-
Channel heat exchanger, the second liquid pipe of 21-, the second tracheae of 22-, 23- electric expansion valve, 24- sensor, 30- main hydraulic pipe, the main gas of 31-
Pipe, 32- restricting element, 33- outdoor heat exchanger, 34- indoor heat exchanger, 35- compressor, 36- four-way valve.
Specific embodiment
Below first to the invention relates to some concepts simply introduced, and will be in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
It is some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall in the protection scope of this application.
In the description of the present application, unless otherwise indicated, "/" indicates the meaning of "or", for example, A/B can indicate A or B.
"and/or" herein is only a kind of incidence relation for describing affiliated partner, indicates may exist three kinds of relationships, for example, A
And/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, "at least one" is
Refer to one or more, " multiple " refer to two or more.The printed words such as " first ", " second " are not to quantity and execution order
It is defined, and the printed words such as " first ", " second " also do not limit certain difference.
It is simply introduced firstly, for the cooling and warming process of air-conditioning:
As shown in Figure 1, air-conditioning include: compressor 35, four-way valve 36, main tracheae 31, main hydraulic pipe 30, indoor heat exchanger 34,
Outdoor heat exchanger 33 and restricting element 32.
When carrying out refrigeration mode work, refrigerant is compressed air-conditioning in compressor 35, by the system of script low-temp low-pressure
After refrigerant gas is compressed into the superheated vapor of high temperature and pressure, it is discharged by compressor 35.Different from single cold air-conditioning, air conditioner is logical
Cross the flow direction of an electromagnetism four-way reversing valve (four-way valve 36 in Fig. 1) control refrigerant.The superheated vapor of high temperature and pressure enters
Four-way valve 36 is imported in outdoor heat exchanger 33 through four-way valve 36 by the main tracheae 31 connecting with outdoor heat exchanger 33.
The superheated vapor of high temperature and pressure is cooled down in outdoor heat exchanger 33, passes through the cooling heat spreading function of fan, mistake
The refrigerant of heat is changed into from gaseous state becomes liquid.Air conditioner is installed between outdoor heat exchanger 33 and indoor heat exchanger 34
There is restricting element 32, for controlling the flow of refrigerant.Refrigerant is discharged from outdoor heat exchanger 33 through main hydraulic pipe 30, by throttling
Element 32 enters the room in heat exchanger 34 after throttling.Refrigerant liquid endothermic gasification in heat exchanger 34 indoors, ambient air temperature
Temperature decline, cold wind are blown into interior by fan.
For air-conditioning when carrying out heating mode work, the high temperature and pressure superheated refrigerant steam compressed through compressor 35 is by compressing
Machine 35 is discharged, and superheated refrigerant steam is sent into indoor heat exchanger 34 using four-way valve 36, the refrigerant vapour of overheat is logical
The heat dissipation of indoor heat exchanger 34 is crossed, the heat to shed is blown out by fan from air port.It is high that medium temperature is formed after superheated refrigerant steam is cooling
The refrigerant liquid of pressure flows through restricting element 32 by indoor heat exchanger 34 and throttles, then the master by connecting with outdoor heat exchanger 33
Liquid pipe 30 is sent into outdoor heat exchanger 33.Refrigerant is absorbed heat in outdoor heat exchanger 33 after evaporation, through due to outdoor heat exchanger 33
The main tracheae 31 of connection is discharged.
Above it is found that outdoor heat exchanger 33 is when air-conditioning is in heating work, due to the system in outdoor heat exchanger 33 at this time
Cryogen needs to absorb heat, and leads to that dewdrop or condensed water can be condensed on heat exchanger, thus, when outdoor heat exchanger uses micro-channel heat exchanger
As evaporator in use, the drainage performance due to micro-channel heat exchanger is poor, it will lead to and condensed largely on micro-channel heat exchanger
Water reduces the performance of micro-channel heat exchanger.
In turn, the application expects a kind of heat exchanger, micro-channel heat exchanger heat exchange good using finned tube exchanger drainage performance
The good advantage of performance, the two is combined.Using finned tube exchanger first by the dehydration in air, then use micro-channel heat exchanger
It exchanges heat with air, technical problem present in above-mentioned technical proposal is solved with this.
Embodiment one:
The embodiment of the present application provides a kind of heat exchanger, is applied in air-conditioner outdoor unit.
As shown in Fig. 2, the heat exchanger includes: finned tube exchanger component, Thermal Performance of Micro Channels device assembly；Finned tube exchanger
Component specifically includes: finned tube exchanger 10, the first tracheae 12 and the first liquid pipe 11；Thermal Performance of Micro Channels device assembly is specific to wrap
It includes: micro-channel heat exchanger 20, the second tracheae 22 and the second liquid pipe 21.
As shown in Fig. 2, the first end of the first tracheae 12 is connected to the main tracheae 31 of air-conditioner outdoor unit, the of the first tracheae 12
Two ends are connected to finned tube exchanger 10.The first end of second tracheae 22 is connected to the main tracheae 31 of air-conditioner outdoor unit, the second gas
The second end of pipe 22 is connected to micro-channel heat exchanger 20.The first end of first liquid pipe 11 is connected to the main hydraulic pipe of air-conditioner outdoor unit
30, the second end of the first liquid pipe 11 is connected to finned tube exchanger 10.The first end of second liquid pipe 21 is connected to air-conditioner outdoor unit
Main hydraulic pipe 30, the second end of the second liquid pipe 21 is connected to micro-channel heat exchanger 20；
The effect of above-mentioned connection type is in order to enable the liquid refrigerant of the medium temperature high pressure in main hydraulic pipe 30 can pass through
First liquid pipe 11 and the second liquid pipe 21 separately flow into finned tube exchanger 10 and micro-channel heat exchanger 20, and refrigerant is changed in finned tube
In hot device 10 and micro-channel heat exchanger 20 after heat absorption evaporation, it is discharged by the first tracheae 12 and the second tracheae 22 through main tracheae 31, after
It is continuous to carry out cycle operation.
20 surface of micro-channel heat exchanger condenses excessive water in order to prevent, influences its heat transfer effect, as shown in Fig. 2, fin
Heat exchange of heat pipe component is positioned close to the inlet side in outdoor unit air duct, and Thermal Performance of Micro Channels device assembly is positioned close to air-conditioner outdoor unit
The air side in air duct.So that the wind in air duct can first pass around finned tube exchanger 10, analysed on finned tube exchanger 10
Condensate on micro-channel heat exchanger 20 can be greatly decreased later using micro-channel heat exchanger 20 in moisture in air out in this way
A possibility that.
Small-pipe diameter heat exchanger is while saving material cost, additionally it is possible to increase the relative surface area of refrigerant, promotion is changed
The thermal efficiency, but caliber is smaller, the cold-producing medium stream dynamic resistance in pipe is bigger.In order to maximize improving heat exchanging efficiency and reduce at
This, the finned tube exchanger 10 in heat exchanger provided by the embodiments of the present application can use the fin of 7mm caliber specification.
In one implementation, the fin type of finned tube exchanger 10 can be plain film, corrugated plate, slotted sheet, open
The patterns such as window, eddy generator piece, combined type fin.Plain film, corrugated plate draining, hold white performance be better than slotted sheet etc. other
Form fin, and the pure coefficient of heat transfer of corrugated plate is higher than plain film, therefore in order to improve the white performance of the draining of heat exchanger appearance and guarantee
Heat exchanger exchange capability of heat under non-frozen condition, the finned tube exchanger component in heat exchanger provided herein use corrugated plate
The fin of pattern.
In one implementation, micro-channel heat exchanger 20 can be the types such as horizontal flat pipe type, vertical flat pipe type, blade inserting
Formula, it is most strong that white ability is held in the draining of blade inserting micro-channel heat exchanger 20, therefore holds frost to improve the draining of micro-channel heat exchanger 20
The fin of performance, the micro-channel heat exchanger in heat exchanger provided herein can use blade inserting.
It in one implementation, is anti-since the resistance of finned tube exchanger component, Thermal Performance of Micro Channels device assembly is different
Only resistance difference causes two non-uniform problems of heat exchanger assembly inner refrigerant assignment of traffic, by detecting 12 He of the first tracheae
The degree of superheat of second tracheae, 22 discharging refrigerant, to adjust the flow of refrigerant in the first liquid pipe 11 and the second liquid pipe 21.Therefore,
As shown in Fig. 2, being equipped with flow regulator in the first liquid pipe 11 and the second liquid pipe 21, it is respectively used to adjusting and flows through the first liquid pipe
11 and second refrigerant in liquid pipe 21 flow.
Illustratively, as shown in Fig. 2, the flow regulator installed in the first liquid pipe 11 and the second liquid pipe 21 can use
Electric expansion valve 13 and electric expansion valve 23.
It in one implementation, can be by adjusting electronics in order to make refrigerant sufficiently exchange heat in heat exchanger
The opening size of expansion valve 13 and electric expansion valve 23 is big come the flow for adjusting 21 inner refrigerant of the first liquid pipe 11 and the second liquid pipe
It is small.
In one implementation, it is additionally provided with sensor on the first tracheae 12 and the second tracheae 22, is flowed through for detecting
The temperature and pressure of 22 inner refrigerant of first tracheae 12 and the second tracheae.
Heat exchanger provided in this embodiment, by analysing the moisture in the air of air duct first with finned tube exchanger 10
Out, the method to exchange heat using micro-channel heat exchanger 20 solves and is easy condensate moisture condensation on micro-channel heat exchanger 20, reduces
The technical issues of heat exchange efficiency of micro-channel heat exchanger 20, utilizes the high cost of 20 heat exchange efficiency of micro-channel heat exchanger to greatest extent
Low feature.
Embodiment two:
The present embodiment provides a kind of heat exchanger control methods, are applied in air conditioner, and for controlling, embodiment is a kind of to be changed
Hot device.
Since the resistance of finned tube exchanger component, Thermal Performance of Micro Channels device assembly is different, refrigerant is in two heat exchangers
Flow velocity it is different, cause heat exchange degree of the refrigerant in two heat exchangers also not identical.In order to make refrigerant exchange heat
It sufficiently exchanges heat in device, expecting in the embodiment of the present application can be by the first tracheae 12 of detection and the second tracheae 22 discharging refrigerant
The degree of superheat, and the mode of the uninterrupted of refrigerant in the first liquid pipe 11 and the second liquid pipe 21 is adjusted according to testing result, to solve
Certainly above-mentioned technical problem.
In one implementation, as shown in figure 3, heat exchanger control method provided by the embodiment of the present application, specific to wrap
It includes:
S301, acquisition flow through the degree of superheat of 22 inner refrigerant of the first tracheae 12 and the second tracheae.Refrigerant superheat degree is by
The temperature and pressure that the sensor 24 of the sensor 14 and the setting on the second tracheae 22 that are arranged on one tracheae 12 obtains calculates
It arrives.
S302, basis flow through the degree of superheat of 22 inner refrigerant of the first tracheae 12 and the second tracheae, adjust flow regulator
Uninterrupted.
In one implementation, S302 can specifically include:
S3021, when flowing through the degree of superheat of refrigerant of the first tracheae 12 in the first preset range, control the first liquid pipe
The opening size of flow regulator on 11 is constant；It is preset when the degree of superheat for the refrigerant for flowing through the first tracheae 12 is higher than first
When range, the opening size for controlling the flow regulator in the first liquid pipe 11 becomes larger；When the refrigerant for flowing through the first tracheae 12
Degree of superheat when being lower than the first preset range, the opening size of flow regulator controlled in the first liquid pipe 11 becomes smaller.
S3022, when flowing through the degree of superheat of refrigerant of the second tracheae 22 in the second preset range, control the second liquid pipe
The opening size of flow regulator on 21 is constant；It is preset when the degree of superheat for the refrigerant for flowing through the second tracheae 22 is higher than second
When range, the opening size for controlling the flow regulator in the second liquid pipe 21 becomes larger；When the refrigerant for flowing through the second tracheae 22
Degree of superheat when being lower than the second preset range, the opening size of flow regulator controlled in the second liquid pipe 21 becomes smaller.
In one implementation, step S302 can be implemented in accordance with the following methods:
It is as shown in Figure 5: when air-conditioning is in heating mode work:
S501, initialization EVOmax, EVOmin, TSHo, i=1, wherein EVOmax and EVOmin is electric expansion valve 13
With the permitted maximum opening of electric expansion valve 23 and minimum aperture, TSHo is control target superheat degree, and value range is 1~5,
I is the mark of electric expansion valve.It is the electric expansion valve 13 being arranged in the first liquid pipe 11 as i=1, is the second liquid as i=2
The electric expansion valve 23 being arranged on pipe 21.
S502, initialization EVO1 and EVO2, wherein EVO1 and EVO2 is respectively electric expansion valve 13 and electric expansion valve 23
Aperture.
S503, detection Tgi, and calculate TSHi, and wherein Tgi is the temperature of i-th of tracheae inner refrigerant, and i-th of TSHi
The degree of superheat of tracheae outlet refrigerant.The first tracheae 12 is indicated as i=1, and the second tracheae 22 is indicated as i=2.
S504, the difference for judging TSHi and TSHo.When TSHi-TSHo > δ (δ is the constant greater than 0), EVOi (n)=
EVOi(n-1)+ΔEVO.Wherein EVOi (n) indicates the aperture at i-th of n-th moment of electric expansion valve, and Δ EVO indicates electronic expansion
The opening size of valve adjustment.Above-mentioned formula indicates that the aperture at i-th of n-th moment of electric expansion valve is equal to what it was opened in last moment
On the basis of increase Δ EVO aperture.When TSHi-TSHo <-δ, EVOi (n)=EVOi (n-1)-Δ EVO.As-δ≤TSHi-
When TSHo≤δ, EVOi (n)=EVOi (n-1), i.e. electronic expansion valve opening are constant, and (electronic expansion valve opening and last moment are protected
It holds consistent).Also, as EVOi (n) in EVOi (n)=EVOi (n-1)-Δ EVO or EVOi (n)=EVOi (n-1)+Δ EVO
When aperture reaches the maximum opening or minimum aperture of its permission, EVOi (n)=EVOi (n-1).
Whether currently adjust be electric expansion valve 13 for S505, judgement, if it is, return step S503 enter it is next
Regulating cycle adjusts the aperture of electric expansion valve 23.If it is not, then return step S503 enters next regulating cycle, adjust
Save the aperture of electric expansion valve 13.
It should be noted that the refrigeration mode of air-conditioning is similar with heating mode, therefore, when air-conditioning work in refrigeration mode
When, control process is similar with Fig. 5, and details are not described herein.
Illustratively, in order to facilitating the flow of intelligent 21 inner refrigerant of adjusting the first liquid pipe 11 and the second liquid pipe big
Small, the flow regulator installed in the first liquid pipe 11 and the second liquid pipe 21 can use electric expansion valve, by adjusting electronics
The opening size of expansion valve 13 and electric expansion valve 23 is big come the flow for adjusting 21 inner refrigerant of the first liquid pipe 11 and the second liquid pipe
It is small.
When the refrigerant superheat degree of heat exchanger escape pipe discharge is high, illustrate the heat mistake that refrigerant absorbs in heat exchanger
It is more, need to increase the flow of refrigerant, so that there can be more refrigerants to absorb heat by heat exchanger.When heat exchanger is discharged
Refrigerant superheat degree it is low when, the heat for illustrating that refrigerant absorbs in heat exchanger is very few, it is desirable to reduce the flow of refrigerant, with
Enable refrigerant to absorb more heats in heat exchanger, improves heat exchange efficiency to greatest extent.
In air-conditioning system underrun (such as outdoor environment temperature is higher when being in heating mode, at air-conditioning for air-conditioning
Outdoor environment temperature is lower when refrigeration mode), the pressure of system is smaller, and integrity problem easily occurs in compressor, can pass through
The mode for closing a heat exchanger assembly reduces system low-voltage and promotes pressure ratio.
In order to control the open and close of finned tube exchanger 10 and micro-channel heat exchanger 20, the first liquid pipe 11 and
Flow regulator is provided in two liquid pipes 21 to control the open and close of air-conditioning heat exchanger during underrun.
In turn, as shown in figure 4, heat exchanger control method provided by the embodiment of the present invention further include:
S303, the operating load for obtaining heat exchanger place air-conditioning.
S304, when operating load is lower than threshold value: close the volume control device in the first liquid pipe 11 or the second liquid pipe 21.
When air-conditioning, which is in, normally meets operation, while opening finned tube exchanger 10 and micro-channel heat exchanger 20.
In one implementation, dress can also be adjusted by the way that flow is arranged on the first tracheae 12 and the second tracheae 22
It sets, to control the open and close of air-conditioning heat exchanger during underrun.
In one implementation, the above method can be implemented by the following method:
It is illustrated in figure 6 the simple Air Conditioning Cycle figure using a kind of heat exchanger of offer of the embodiment of the present application.Wherein,
The heat exchanger provided in main hydraulic pipe and main tracheae and the embodiment of the present application one in Fig. 6 is connected.High-pressure pressure sensor 37 is used
Pressure in the main tracheae that detection compressor 35 is connect with outdoor heat exchanger.Indoor heat exchanger 34, outdoor heat exchanger and compression
Machine 35 is connected by four-way valve 36.Low-pressure sensor 39 is for detecting the pipeline that compressor 35 is connected with gas-liquid separator 38
In pressure.38 one end of gas-liquid separator is connect with compressor 35, and the other end is connect with indoor heat exchanger 34.High-pressure Pd is
The detected value of high-pressure pressure sensor 37, low pressure Ps be low-pressure sensor 39 detected value, definition pressure ratio ε be Pd,
The ratio of Ps.Determined whether to close part heat exchanger assembly according to the pressure ratio ε of air-conditioning system in system underrun.
In one implementation, pressure ratio ε can be calculated by the value of detection Pd and Ps.When pressure ratio ε is less than preset value
When, judge that air-conditioning is in underrun state, adjust heat exchanger according to the method in step Fig. 8, heating mould is in air-conditioning
For when formula works, control method is specifically included:
S701, initialization EVOmin, EVOmax, ε mino, ε maxo, wherein ε mino, ε maxo are respectively target pressure ratio, and
1 < ε mino < ε maxo.
S702, initialization EVO1, EVO2, that is, obtain the current aperture of electric expansion valve 13 and electric expansion valve 23.
S703, the value for detecting Pd and Ps, and calculate ε.As ε < ε mino, by electric expansion valve 13 or electric expansion valve 23
Aperture be arranged to minimum, and jump to step S703.
S704, as ε >=ε maxo, illustrate that air-conditioning is not on underrun state, then air-conditioning goes to degree of superheat control
Process.As ε < ε maxo, the aperture of electric expansion valve 13 or electric expansion valve 23 is arranged to minimum, and jump to step
S703。
In one implementation, air-conditioning in heating mode, when air conditioner load is lower, change by microchannel in the above process
Be not in a large amount of condensates on hot device 20, the preferable micro-channel heat exchanger 20 of heat exchange property can be used at this time.Therefore, Ke Yiguan
Close the electric expansion valve 13 in the first liquid pipe 11.
It should be noted that the refrigeration mode of air-conditioning is similar with heating mode, therefore, when air-conditioning work in refrigeration mode
When, control process is similar with Fig. 8, and details are not described herein.But when in refrigeration mode due to air-conditioning, micro-channel heat exchanger 20
It is not much different with 10 function of finned tube exchanger and effect, therefore, any one in the two can be closed.
It should be noted that control method when underload is considered as protection control, priority level is higher than the controlling party in Fig. 3
Method.
Heat exchanger control method provided in this embodiment, can make air-conditioning in heating operations to greatest extent, by air
In moisture be precipitated on finned tube exchanger, the advantages of using finned tube exchanger, to make up micro-channel heat exchanger 20 not
Foot.Meanwhile underload control method also can improve the reliability of air-conditioning when air-conditioning is in low-power.
Embodiment three:
The present embodiment provides a kind of heat exchanger control devices, are applied in air conditioner, provide for controlling in embodiment one
Heat exchanger.
As shown in fig. 7, heat exchanger control device provided in this embodiment, specifically includes: acquiring unit 601 and control unit
602。
Acquiring unit 601, for obtaining the degree of superheat for flowing through 22 inner refrigerant of the first tracheae 12 and the second tracheae.Refrigerant
The degree of superheat is calculated by the temperature and pressure that the sensor 24 on the sensor 14 and the second tracheae 22 on the first tracheae 12 obtains
It arrives.
Control unit 602, for flowing through 22 inner refrigerant of the first tracheae 12 and the second tracheae in the acquisition of acquiring unit 601
After the degree of superheat, according to the degree of superheat for flowing through 22 inner refrigerant of the first tracheae 12 and the second tracheae, 11 He of the first liquid pipe pipe is adjusted
The uninterrupted for the flow regulator being arranged in second liquid pipe 21.
It specifically includes:
When flowing through the degree of superheat of refrigerant of the first tracheae 12 in the first preset range, control in the first liquid pipe 11
The opening size of flow regulator is constant.When the degree of superheat for the refrigerant for flowing through the first tracheae 12 is higher than the first preset range
When, the opening size for controlling the flow regulator in the first liquid pipe 11 becomes larger.When the mistake for the refrigerant for flowing through the first tracheae 12
When temperature is lower than the first preset range, the opening size for controlling the flow regulator in the first liquid pipe 11 becomes smaller.
When flowing through the degree of superheat of refrigerant of the second tracheae 22 in the second preset range, control in the second liquid pipe 21
The opening size of flow regulator is constant.When the degree of superheat for the refrigerant for flowing through the second tracheae 22 is higher than the second preset range
When, the opening size for controlling the flow regulator in the second liquid pipe 21 becomes larger.When the mistake for the refrigerant for flowing through the second tracheae 22
When temperature is lower than the second preset range, the opening size for controlling the flow regulator in the second liquid pipe 21 becomes smaller.
In one implementation, above-mentioned control unit 602 adjusts the first liquid pipe 11 and 21 uninterrupted of the second liquid pipe
Control method can be implemented according to method shown in fig. 5.
When the refrigerant superheat degree of heat exchanger escape pipe discharge is high, illustrate the heat mistake that refrigerant absorbs in heat exchanger
It is more, need to increase the flow of refrigerant, so that there can be more refrigerants to absorb heat by heat exchanger.When heat exchanger is discharged
Refrigerant superheat degree it is low when, the heat for illustrating that refrigerant absorbs in heat exchanger is very few, it is desirable to reduce the flow of refrigerant, with
Enable refrigerant to absorb more heats in heat exchanger, improves heat exchange efficiency to greatest extent.
In air-conditioning system underrun (such as outdoor environment temperature is higher when being in heating mode, at air-conditioning for air-conditioning
Outdoor environment temperature is lower when refrigeration mode), the pressure of system is smaller, and integrity problem easily occurs in compressor, can pass through
The mode for closing a heat exchanger assembly reduces system low-voltage and promotes pressure ratio.
In order to control finned tube exchanger 10 and Thermal Performance of Micro Channels in the case where air-conditioning is in refrigeration work mode
Flow regulator is respectively arranged in the open and close of device 20, the first liquid pipe pipe 11 and the second liquid pipe 21.In turn, of the invention
Heat exchanger control device provided by embodiment, further includes:
Acquiring unit 601, the operating load of air-conditioning where being also used to obtain heat exchanger；Control unit 602 is also used to obtaining
After the operating load of air-conditioning where taking unit 601 to obtain the heat exchanger, when operating load is lower than threshold value: closing the first liquid
Volume control device on pipe 11 or the second liquid pipe 21.When air-conditioning is in normal duty operation, while opening finned tube heat exchange
Device 10 and micro-channel heat exchanger 20.It in one implementation, can also be by being set on the first tracheae 12 and the second tracheae 22
Flow regulator is set, to control the open and close of air-conditioning heat exchanger during underrun.Specific control method is such as
Under:
It is illustrated in figure 6 the simple Air Conditioning Cycle figure using a kind of heat exchanger of offer of the embodiment of the present application.Wherein,
The heat exchanger provided in main hydraulic pipe and main tracheae and the embodiment of the present application one in Fig. 6 is connected.High-pressure pressure sensor 37 is used
Pressure in the main tracheae that detection compressor 35 is connect with outdoor heat exchanger.Indoor heat exchanger 34, outdoor heat exchanger and compression
Machine 35 is connected by four-way valve 36.Low-pressure sensor 39 is used to detect the pipe that 34 machines 35 of compression are connected with gas-liquid separator 38
Pressure in road.38 one end of gas-liquid separator is connect with compressor 35, and the other end is connect with indoor heat exchanger 34.High-pressure Pd
For the detected value of high-pressure pressure sensor 37, low pressure Ps is the detected value of low-pressure sensor 39, defines pressure ratio ε and is
The ratio of Pd, Ps.Determined whether to close part heat exchanger group according to the pressure ratio ε of air-conditioning system in system underrun
Part.
In one implementation, by detecting the value of Pd and Ps, pressure ratio ε is calculated.When pressure ratio ε is less than preset value, sentence
Disconnected air-conditioning is in underrun state, adjusts heat exchanger according to the method in Fig. 8.
It should be noted that control method when underload is considered as protection control, priority level is higher than the controlling party in Fig. 3
Method.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, only with the division progress of above-mentioned each functional unit for example, in practical application, can according to need and will be upper
It states function distribution to be completed by different functional units, i.e., the internal structure of device is divided into different functional units, to complete
All or part of function described above.The specific work process of the system, apparatus, and unit of foregoing description, before can referring to
The corresponding process in embodiment of the method is stated, details are not described herein.
Example IV:
The present embodiment provides a kind of air-conditioning, which includes the heat exchanger or above-mentioned implementation that above-described embodiment one provides
The heat exchanger control device that example three provides.
The heat exchanger, and/or heat exchanger control method and/or heat exchanger that air-conditioning provided in this embodiment includes control dress
It sets, principle, specific implementation and the effect of generation may refer to the corresponding description of above-described embodiment, and it is no longer superfluous to repeat place
It states.
It should be noted that being schematical, only a kind of logic function to the division of module in the embodiment of the present application
It divides, there may be another division manner in actual implementation.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.
Using integrated unit, Fig. 9 shows a kind of possible structure of above-mentioned heat exchanger control device
Schematic diagram.The control device 80 includes: storage unit 801, processing unit 802 and interface unit 803.Processing unit 802 is used
Control management is carried out in the movement to control device 80.Storage unit 801, program code used to control the device and data.It connects
Mouth unit 803 is used to connect the content for receiving input with other external equipments, such as interface unit can be with electric expansion valve, biography
The air supply rates such as sensor and compressor are connected, and are sent with sending signal to above-mentioned air supply rate or receiving above-mentioned air supply rate
Signal etc..
Wherein, using processing unit as processor, storage unit is memory, and interface unit is for transceiver.Wherein, empty
Adjust the control device of device referring to Fig.1 in 0 shown in device 90, including transceiver 903, processor 902, memory 901 and bus
904, transceiver 903, processor 902 are connected by bus 904 with memory 901.
Processor 902 can be a general central processor (Central Processing Unit, CPU), micro process
Device, application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC) or one or more
A integrated circuit executed for controlling application scheme program.
Memory 901 can be read-only memory (Read-Only Memory, ROM) or can store static information and instruction
Other kinds of static storage device, random access memory (Random Access Memory, RAM) or letter can be stored
The other kinds of dynamic memory of breath and instruction, is also possible to Electrically Erasable Programmable Read-Only Memory (Electrically
Erasable Programmable Read-only Memory, EEPROM), CD-ROM (Compact Disc Read-
Only Memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, optical disc, digital universal
Optical disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storage apparatus or can be used in carrying or store to have referring to
Enable or data structure form desired program code and can by any other medium of computer access, but not limited to this.
Memory, which can be, to be individually present, and is connected by bus with processor.Memory can also be integrated with processor.
Wherein, memory 901 is used to store the application code for executing application scheme, and is controlled by processor 902
System executes.Transceiver 903 is used to receive the content of external equipment input, and processor 902 is used to execute to store in memory 901
Application code, to realize the control device of the electric expansion valve in the embodiment of the present application.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When being realized using software program, can entirely or partly realize in the form of a computer program product.The computer
Program product includes one or more computer instructions.On computers load and execute computer program instructions when, all or
It partly generates according to process or function described in the embodiment of the present application.The computer can be general purpose computer, dedicated meter
Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
Word user line (Digital Subscriber Line, DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another
A web-site, computer, server or data center are transmitted.The computer readable storage medium can be computer
Any usable medium that can be accessed either includes the numbers such as one or more server, data centers that medium can be used to integrate
According to storage equipment.The usable medium can be magnetic medium (for example, floppy disk, hard disk, tape), optical medium (for example, DVD),
Or semiconductor medium (such as solid state hard disk (Solid State Disk, SSD)) etc..
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application should be based on the protection scope of the described claims.
Claims (10)
1. a kind of heat exchanger is applied to air-conditioner outdoor unit characterized by comprising finned tube exchanger component, Thermal Performance of Micro Channels
Device assembly；The finned tube exchanger component, specifically includes: finned tube exchanger, the first tracheae and the first liquid pipe；It is described micro- logical
Road heat exchanger assembly, specifically includes: micro-channel heat exchanger, the second tracheae and the second liquid pipe；
The first end of first tracheae is connected to the main tracheae of the air-conditioner outdoor unit, the second end connection of first tracheae
To the finned tube exchanger；
The first end of second tracheae is connected to the main tracheae of the air-conditioner outdoor unit, the second end connection of second tracheae
To the micro-channel heat exchanger；
The first end of first liquid pipe is connected to the main hydraulic pipe of the air-conditioner outdoor unit, the second end connection of first liquid pipe
To the finned tube exchanger；
The first end of second liquid pipe is connected to the main hydraulic pipe of the air-conditioner outdoor unit, the second end connection of second liquid pipe
To the micro-channel heat exchanger；
The finned tube exchanger component is leaned on close to the inlet side in the air-conditioner outdoor unit air duct, the Thermal Performance of Micro Channels device assembly
The air side in the nearly air duct.
2. heat exchanger according to claim 1, which is characterized in that
Flow regulator is installed in first liquid pipe and second liquid pipe, is respectively used to adjusting and flows through first liquid
The flow of the flow of the refrigerant of pipe and the refrigerant of second liquid pipe.
3. heat exchanger according to claim 2, which is characterized in that
It is provided with sensor on first tracheae and second tracheae, flows through first tracheae and described for detecting
The temperature and pressure of two tracheae inner refrigerants.
4. a kind of heat exchanger control method, which is characterized in that for controlling any one of claim 2-3 heat exchanger, specifically
Include:
Obtain the degree of superheat for flowing through the first tracheae and the second tracheae inner refrigerant；
According to the degree of superheat for flowing through first tracheae and the second tracheae inner refrigerant, the aperture of flow regulator is adjusted
Size.
5. heat exchanger control method according to claim 4, which is characterized in that
The basis flows through the degree of superheat of first tracheae and the second tracheae inner refrigerant, adjusts the flow and adjusts dress
The opening size set, specifically includes:
When flowing through the degree of superheat of refrigerant of first tracheae in the first preset range, control in first liquid pipe
The opening size of flow regulator is constant；It is preset when the degree of superheat for the refrigerant for flowing through first tracheae is higher than described first
When range, the opening size for controlling the flow regulator in first liquid pipe becomes larger；When the system for flowing through first tracheae
When the degree of superheat of cryogen is lower than first preset range, the opening size of the flow regulator in first liquid pipe is controlled
Become smaller；
When flowing through the degree of superheat of refrigerant of second tracheae in the second preset range, control in second liquid pipe
The opening size of flow regulator is constant；It is preset when the degree of superheat for the refrigerant for flowing through second tracheae is higher than described second
When range, the opening size for controlling the flow regulator in second liquid pipe becomes larger；When the system for flowing through second tracheae
When the degree of superheat of cryogen is lower than second preset range, the opening size of the flow regulator in second liquid pipe is controlled
Become smaller.
6. heat exchanger control method according to claim 4, which is characterized in that the method also includes:
The operating load of air-conditioning where obtaining the heat exchanger closes first liquid when the operating load is lower than threshold value
Volume control device on pipe or second liquid pipe.
7. a kind of heat exchanger control device, for controlling any one of claim 1-3 heat exchanger characterized by comprising
Acquiring unit and control unit；
The acquiring unit, for obtaining the degree of superheat for flowing through the first tracheae and the second tracheae inner refrigerant；
Described control unit, for obtaining the mistake for flowing through first tracheae and the second tracheae inner refrigerant in acquiring unit
After temperature, according to the degree of superheat for flowing through first tracheae and the second tracheae inner refrigerant, flow regulator is adjusted
Opening size.
8. heat exchanger control device according to claim 7, which is characterized in that described control unit is specifically used for:
When flowing through the degree of superheat of refrigerant of first tracheae in the first preset range, the flow in the first liquid pipe is controlled
The opening size of regulating device is constant；When the degree of superheat for the refrigerant for flowing through first tracheae is higher than first preset range
When, the opening size for controlling the flow regulator in first liquid pipe becomes larger；When the refrigerant for flowing through first tracheae
Degree of superheat when being lower than first preset range, the opening size for controlling the flow regulator in first liquid pipe becomes
It is small；
When flowing through the degree of superheat of refrigerant of second tracheae in the second preset range, the flow in the second liquid pipe is controlled
The opening size of regulating device is constant；When the degree of superheat for the refrigerant for flowing through second tracheae is higher than second preset range
When, the opening size for controlling the flow regulator in second liquid pipe becomes larger；When the refrigerant for flowing through second tracheae
Degree of superheat when being lower than second preset range, the opening size for controlling the flow regulator in second liquid pipe becomes
It is small.
9. heat exchanger control device according to claim 7, which is characterized in that
The acquiring unit, the operating load of air-conditioning where being also used to obtain the heat exchanger；
Described control unit is also used to after the acquiring unit obtains the operating load of air-conditioning where the heat exchanger, when
When the operating load is lower than threshold value, the volume control device in the first liquid pipe or the second liquid pipe is closed.
10. a kind of air-conditioning, which is characterized in that including any one of the claim 1-3 heat exchanger；Or claim 7-9 is any
The item heat exchanger control device.
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| CN201910818156.3A CN110513768A (en) | 2019-08-30 | 2019-08-30 | A kind of heat exchanger, heat exchanger control method and device, air-conditioning |
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| CN201910818156.3A CN110513768A (en) | 2019-08-30 | 2019-08-30 | A kind of heat exchanger, heat exchanger control method and device, air-conditioning |
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Application publication date: 20191129 |