CN104344610A - Air conditioning unit - Google Patents
Air conditioning unit Download PDFInfo
- Publication number
- CN104344610A CN104344610A CN201310332245.XA CN201310332245A CN104344610A CN 104344610 A CN104344610 A CN 104344610A CN 201310332245 A CN201310332245 A CN 201310332245A CN 104344610 A CN104344610 A CN 104344610A
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- China
- Prior art keywords
- expansion valve
- heat exchanger
- compressor
- air
- conditioner set
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
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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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides an air conditioning unit comprising a compressor, a second heat exchanger, a first heat exchanger, a first connecting pipe, a first expansion valve, an economizer and a second expansion valve. The second heat exchanger and the first heat exchanger are connected with the compressor respectively and further connected with the first connecting pipe. The first expansion valve, the economizer and the second expansion valve are sequentially connected on the first connecting pipe. The compressor is a second-level compressor or a multi-level compressor and connected with the economizer. The first expansion valve is arranged between the first heat exchanger and the economizer. The second expansion valve is arranged between the second heat exchanger and the economizer. The air conditioning unit further comprises a second connecting pipe and a third expansion valve. The second connecting pipe is connected with the second heat exchanger and the first heat exchanger. The third expansion valve is adjustable and sequentially connected on the second connecting pipe. According to the arrangement, by adjusting the third expansion valve, the air conditioning unit is adjusted, coolants directly reaches to the second heat exchanger (the first heat exchanger) through the third expansion valve, adjusting speed is improved, and operation performance of the air conditioning unit is improved. The invention further provides another air conditioning unit.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, relate to a kind of air-conditioner set.
Background technology
Along with the progress of science and technology, heat pump performance improves gradually.At present, in order to promote cycle efficieny, adopt and have intercooled two-stage or multi-stage compression, cooling during rolling adopts economizer (or flash evaporation) to realize usually.For two stage compression refrigeration circulation, as shown in Figure 1, the first pipeline connecting condenser and evaporimeter arranges economizer (or flash evaporation), the gas outlet of economizer (or flash evaporation) is connected with the secondary inlet of compressor, to be serially connected with on the first pipeline and the first expansion valve be positioned between economizer (or flash evaporation) and condenser, to be serially connected with on the first pipeline and the second expansion valve be positioned between economizer (or flash evaporation) and evaporimeter.As shown in Figure 2, the high-pressure liquid refrigerant carrying out condenser by the first expansion valve reducing pressure by regulating flow to state point 6, enter economizer (or flash evaporation), in economizer (or flash evaporation), gaseous coolant is separated from liquid refrigerants, gaseous coolant enters compressor, saturated liquid refrigerants to state point 8, enters evaporimeter by the second expansion valve reducing pressure by regulating flow.
When air-conditioner set load changes, obviously, adjustment first expansion valve and the second expansion valve is needed.But in adjustment process, refrigerant needs just can reach evaporimeter (condenser) through economizer (or flash evaporation), cause governing speed comparatively slow, make the runnability of air-conditioner set lower.
In addition, when air-conditioner set load changes, need adjustment two expansion valves, make the control system of this air-conditioner set more responsible, more easily go wrong.
In sum, how improving governing speed, to improve the runnability of air-conditioner set, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
The object of this invention is to provide a kind of air-conditioner set, to improve governing speed, and then improve the runnability of air-conditioner set.
To achieve these goals, the invention provides following technical scheme:
A kind of air-conditioner set, comprise compressor, the second heat exchanger be connected with described compressor respectively and First Heat Exchanger, connect the first tube connector of described First Heat Exchanger and described second heat exchanger, is serially connected with the first expansion valve on described first tube connector, economizer and the second expansion valve; Wherein, described compressor is split-compressor or compound compressor, described economizer is connected with described compressor, and described first expansion valve is between described First Heat Exchanger and described economizer, and described second expansion valve is between described second heat exchanger and described economizer; This air-conditioner set also comprises:
Connect the second tube connector of described second heat exchanger and described First Heat Exchanger;
Be serially connected with described second tube connector and adjustable 3rd expansion valve.
Preferably, in above-mentioned air-conditioner set, described first expansion valve and described second expansion valve are fixed expansion valve.
Preferably, in above-mentioned air-conditioner set, described first expansion valve and described second expansion valve are fixed restriction orifice plate.
Preferably, in above-mentioned air-conditioner set, described 3rd expansion valve is electric expansion valve.
Preferably, in above-mentioned air-conditioner set, described compressor is split-compressor, and the gas outlet of described economizer is connected with the secondary inlet mouth of described compressor.
Preferably, in above-mentioned air-conditioner set, described compressor is three-stage blower, and described economizer is secondary economizer, the one-level gas outlet of described economizer is connected with the secondary inlet mouth of described compressor, and the secondary gas outlet of described economizer is connected with three grades of air inlets of described compressor.
Air-conditioner set provided by the invention, by setting up the second tube connector connecting First Heat Exchanger and the second heat exchanger, and the 3rd expansion valve is connected in series on the second tube connector, 3rd expansion valve is adjustable, then refrigerant directly arrives the second heat exchanger (First Heat Exchanger) after the 3rd expansion valve, reach regulating effect, need could arrive compared with the second heat exchanger (or First Heat Exchanger) through economizer with prior art refrigerant, obviously, reach regulating effect very fast, thus improve governing speed, and then improve the runnability of this air-conditioner set.
Simultaneously, air-conditioner set provided by the invention, by means of only adjustment the 3rd expansion valve, the adjustment of this air-conditioner set can being realized, without the need to regulating the first expansion valve and the second expansion valve again, needing adjustment two expansion valves (the first expansion valve and the second expansion valve) to compare with prior art, obviously, decrease controlled plant, simplify the control system of this air-conditioner set, improve the reliability of this air-conditioner set.
Based on the air-conditioner set that above-described embodiment provides, present invention also offers another kind of air-conditioner set, this air-conditioner set, comprise compressor, the second heat exchanger be connected with described compressor respectively and First Heat Exchanger, connect the first tube connector of described First Heat Exchanger and described second heat exchanger, be serially connected with the first expansion valve on described first tube connector, flash evaporation and the second expansion valve; Wherein, described compressor is split-compressor or compound compressor, described flash evaporation is connected with described compressor, and described first expansion valve is between described First Heat Exchanger and described flash evaporation, and described second expansion valve is between described second heat exchanger and described flash evaporation; Described air-conditioner set also comprises:
Connect the second tube connector of described second heat exchanger and described First Heat Exchanger;
Be serially connected with described second tube connector and adjustable 3rd expansion valve.
Preferably, in above-mentioned air-conditioner set, described first expansion valve and described second expansion valve are fixed expansion valve.
Preferably, in above-mentioned air-conditioner set, described first expansion valve and described second expansion valve are fixed restriction orifice plate.
Preferably, in above-mentioned air-conditioner set, described 3rd expansion valve is electric expansion valve.
Preferably, in above-mentioned air-conditioner set, described compressor is split-compressor, and the gas outlet of described flash evaporation is connected with the secondary inlet mouth of described compressor.
Preferably, in above-mentioned air-conditioner set, described compressor is three-stage blower, and described flash evaporation is secondary flash evaporation, the one-level gas outlet of described flash evaporation is connected with the secondary inlet mouth of described compressor, and the secondary gas outlet of described flash evaporation is connected with three grades of air inlets of described compressor.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structured flowchart of the air-conditioner set that Fig. 1 provides for prior art;
The theoretical refrigeration cycle figure of the air-conditioner set that Fig. 2 provides for prior art;
The structured flowchart of the air-conditioner set that Fig. 3 provides for the embodiment of the present invention;
The another kind of structured flowchart of the air-conditioner set that Fig. 4 provides for the embodiment of the present invention;
The theoretical refrigeration cycle figure of the air-conditioner set that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
Embodiments provide a kind of air-conditioner set, improve governing speed, and then improve the runnability of this air-conditioner set.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 3, the air-conditioner set that the embodiment of the present invention provides, comprise compressor, the second heat exchanger be connected with compressor respectively and First Heat Exchanger, connect the first tube connector of First Heat Exchanger and the second heat exchanger, be serially connected with the first expansion valve on the first tube connector, economizer and the second expansion valve; Wherein, compressor is split-compressor or compound compressor, and economizer is connected with compressor, and the first expansion valve is between First Heat Exchanger and economizer, and the second expansion valve is between the second heat exchanger and economizer; This air-conditioner set also comprises: the second tube connector connecting the second heat exchanger and First Heat Exchanger; Be serially connected with the second tube connector and adjustable 3rd expansion valve.
As shown in Figure 5, the Principles of Regulation of the air-conditioner set that the embodiment of the present invention provides are (to freeze): the high-pressure liquid refrigerant from First Heat Exchanger is divided into two-way, flow through the first tube connector and the second tube connector respectively, what flow through the first tube connector leads up to the first expansion valve reducing pressure by regulating flow to state point 6, enter economizer, in economizer, gaseous coolant is separated from liquid refrigerants, and saturated liquid refrigerants to state point 8, enters the second heat exchanger through the second expansion valve throttling; The road flowing through the second tube connector directly by the 3rd expansion valve throttling to state point 8 ', enter the second heat exchanger.By regulating the aperture of the 3rd expansion valve, direct adjustment flow to the cold medium flux of the second heat exchanger through the second tube connector from First Heat Exchanger, namely the state of state point 8 ' is controlled, simultaneously also indirect regulation flow to the cold medium flux of the second heat exchanger through the first tube connector from First Heat Exchanger, namely the state of state point 8 is controlled, then can realize regulating First Heat Exchanger to flow to the cold medium flux of the second heat exchanger by means of only adjustment the 3rd expansion valve, thus can regulatory demand be met.
The air-conditioner set that the embodiment of the present invention provides, by setting up the second tube connector connecting First Heat Exchanger and the second heat exchanger, and the 3rd expansion valve is connected in series on the second tube connector, 3rd expansion valve is adjustable, then refrigerant directly arrives the second heat exchanger (First Heat Exchanger) after the 3rd expansion valve, reach regulating effect, need could arrive compared with the second heat exchanger (or First Heat Exchanger) through economizer with prior art refrigerant, obviously, reach regulating effect very fast, thus improve governing speed, and then improve the runnability of this air-conditioner set.
Simultaneously, the air-conditioner set that the embodiment of the present invention provides, by means of only adjustment the 3rd expansion valve, the adjustment of this air-conditioner set can being realized, without the need to regulating the first expansion valve and the second expansion valve again, needing adjustment two expansion valves (the first expansion valve and the second expansion valve) to compare with prior art, obviously, decrease control object, simplify the control system of this air-conditioner set, improve the reliability of this air-conditioner set.
It should be noted that, refrigerant after regulating in prior art needs through economizer, namely one outpost of the tax office is passed through, and the refrigerant after regulating in the air-conditioner set that the embodiment of the present invention provides directly flows to the second heat exchanger (First Heat Exchanger) by First Heat Exchanger (the second heat exchanger), there is no intermediate node, therefore improve governing speed.The air-conditioner set that the embodiment of the present invention provides, improves governing speed, and then improves the runnability of this air-conditioner set.Concrete, during refrigeration, the ability of compressor increases, more refrigerant can be extracted out in the second heat exchanger, coolant quantity then in the second heat exchanger will reduce, there is the problem that evaporating pressure is too low, and the air-conditioner set that the embodiment of the present invention provides accelerates governing speed, namely the cold medium flux increasing and flow to the second heat exchanger is accelerated, thus solve the problem that in the second heat exchanger, coolant quantity is less faster, the problem that the second heat exchanger evaporating pressure is too low can be solved faster, thus improve the runnability of this air-conditioner set; When heating, the ability of compressor increases, more refrigerant can be extracted out in First Heat Exchanger, coolant quantity then in First Heat Exchanger will reduce, there is the problem that evaporating pressure is too low, and air-conditioner set provided by the invention accelerates governing speed, namely the cold medium flux increasing and flow to First Heat Exchanger is accelerated, thus solve the problem that in First Heat Exchanger, coolant quantity is less faster, the too low problem of First Heat Exchanger evaporating pressure can be solved faster, thus improve the runnability of this air-conditioner set.
Preferably, in the air-conditioner set that above-described embodiment provides, first expansion valve and the second expansion valve are fixed expansion valve, namely the first expansion valve and the second expansion valve non-adjustable, when assembling this air-conditioner set, carrying out optimum Match according to compressor, selecting the first suitable expansion valve and the second expansion valve, can ensure that the pressure in economizer mates with the intermediate pressure of compressor, this air-conditioner set is run in optimum state; Also can ensure the liquid level in economizer, avoid occurring gas that compressor sucks from the economizer problem with liquid coolant; Meanwhile, fixed expansion valve, cost is lower, and structure is more reliable.
The air-conditioner set that the embodiment of the present invention provides, also the first expansion valve and the second expansion valve can be selected to be adjustable expansion valve, in order to ensure that this air-conditioner set has higher running status, prioritizing selection first expansion valve and the second expansion valve are fixed restriction orifice plate, this fixed restriction orifice plate has regulating power, but regulating power is lower.Certainly, the first expansion valve and the second expansion valve also can be other expansion valves, and the embodiment of the present invention is not done this and limited particularly.
For the ease of regulating, in the air-conditioner set that above-described embodiment provides, 3rd expansion valve is electric expansion valve, be convenient to the adjustment of the 3rd expansion valve like this, control system also can adopt tank level control system simultaneously, carries out Flow-rate adjustment mode regulate continuously based on the change of the second heat exchanger (First Heat Exchanger) liquid level.Certainly, the 3rd expansion valve also can be other expansion valves, such as choke valve, capillary, variable-frequency restricting orifice, heating power expansion valve etc., and the embodiment of the present invention is not done this and limited particularly, as long as can ensure that the 3rd expansion valve is adjustable.
Preferably, in the air-conditioner set that above-described embodiment provides, compressor is split-compressor, and the gas outlet of economizer is connected with the secondary inlet mouth of compressor.Certainly, compressor also can be compound compressor, then economizer is two-stage or multistage economizer, concrete, and compressor is three-stage blower, and economizer is secondary economizer; Compressor is four-stage compressor, and economizer is three grades of economizers.Preferably, compressor is three-stage blower, and economizer is secondary economizer, and the one-level gas outlet of economizer is connected with the secondary inlet mouth of compressor, and the secondary gas outlet of economizer is connected with three grades of air inlets of compressor.
Due in the air-conditioner set that above-described embodiment provides, economizer also can be flash evaporation, therefore the embodiment of the present invention additionally provides another kind of air-conditioner set, as shown in Figure 4, this air-conditioner set, comprises compressor, the second heat exchanger be connected with compressor respectively and First Heat Exchanger, connect the first tube connector of First Heat Exchanger and the second heat exchanger, be serially connected with the first expansion valve on the first tube connector, flash evaporation and the second expansion valve; Wherein, compressor is split-compressor or compound compressor, and flash evaporation is connected with compressor, and the first expansion valve is between First Heat Exchanger and flash evaporation, and the second expansion valve is between the second heat exchanger and flash evaporation; This air-conditioner set also comprises: the second tube connector connecting the second heat exchanger and First Heat Exchanger; Be serially connected with the second tube connector and adjustable 3rd expansion valve.
As shown in Figure 5, the Principles of Regulation of the air-conditioner set that the embodiment of the present invention provides are (to freeze): the high-pressure liquid refrigerant from First Heat Exchanger is divided into two-way, flow through the first tube connector and the second tube connector respectively, what flow through the first tube connector leads up to the first expansion valve reducing pressure by regulating flow to state point 6, enter flash evaporation, in flash evaporation, gaseous coolant is separated from liquid refrigerants, and saturated liquid refrigerants to state point 8, enters the second heat exchanger through the second expansion valve throttling; The road flowing through the second tube connector directly by the 3rd expansion valve throttling to state point 8 ', enter the second heat exchanger.By regulating the aperture of the 3rd expansion valve, direct adjustment flow to the cold medium flux of the second heat exchanger through the second tube connector from First Heat Exchanger, namely the state of state point 8 ' is controlled, simultaneously also indirect regulation flow to the cold medium flux of the second heat exchanger through the first tube connector from First Heat Exchanger, namely the state of state point 8 is controlled, then can realize regulating First Heat Exchanger to flow to the cold medium flux of the second heat exchanger by means of only adjustment the 3rd expansion valve, thus can regulatory demand be met.
The air-conditioner set that the embodiment of the present invention provides, by setting up the second tube connector connecting First Heat Exchanger and the second heat exchanger, and the 3rd expansion valve is connected in series on the second tube connector, 3rd expansion valve is adjustable, then refrigerant directly arrives the second heat exchanger (First Heat Exchanger) after the 3rd expansion valve, reach regulating effect, need could arrive compared with the second heat exchanger (or First Heat Exchanger) through flash evaporation with prior art refrigerant, obviously, reach regulating effect very fast, thus improve governing speed, and then improve the runnability of this air-conditioner set.
Simultaneously, the air-conditioner set that the embodiment of the present invention provides, by means of only adjustment the 3rd expansion valve, the adjustment of this air-conditioner set can being realized, without the need to regulating the first expansion valve and the second expansion valve again, needing adjustment two expansion valves (the first expansion valve and the second expansion valve) to compare with prior art, obviously, decrease control object, simplify the control system of this air-conditioner set, improve the reliability of this air-conditioner set.
It should be noted that, refrigerant after regulating in prior art needs through flash evaporation, namely one outpost of the tax office is passed through, and the refrigerant after regulating in the air-conditioner set that the embodiment of the present invention provides directly flows to the second heat exchanger (First Heat Exchanger) by First Heat Exchanger (the second heat exchanger), there is no intermediate node, therefore improve governing speed.The air-conditioner set that the embodiment of the present invention provides, improves governing speed, and then improves the runnability of this air-conditioner set.Concrete, during refrigeration, the ability of compressor increases, more refrigerant can be extracted out in the second heat exchanger, coolant quantity then in the second heat exchanger will reduce, there is the problem that evaporating pressure is too low, and the air-conditioner set that the embodiment of the present invention provides accelerates governing speed, namely the cold medium flux increasing and flow to the second heat exchanger is accelerated, thus solve the problem that in the second heat exchanger, coolant quantity is less faster, the problem that the second heat exchanger evaporating pressure is too low can be solved faster, thus improve the runnability of this air-conditioner set; When heating, the ability of compressor increases, more refrigerant can be extracted out in First Heat Exchanger, coolant quantity then in First Heat Exchanger will reduce, there is the problem that evaporating pressure is too low, and air-conditioner set provided by the invention accelerates governing speed, namely the cold medium flux increasing and flow to First Heat Exchanger is accelerated, thus solve the problem that in First Heat Exchanger, coolant quantity is less faster, the too low problem of First Heat Exchanger evaporating pressure can be solved faster, thus improve the runnability of this air-conditioner set.
Preferably, in the air-conditioner set that above-described embodiment provides, first expansion valve and the second expansion valve are fixed expansion valve, namely the first expansion valve and the second expansion valve non-adjustable, when assembling this air-conditioner set, carrying out optimum Match according to compressor, selecting the first suitable expansion valve and the second expansion valve, can ensure that the pressure in flash evaporation mates with the intermediate pressure of compressor, this air-conditioner set is run in optimum state; Also can ensure the liquid level in flash evaporation, avoid occurring gas that compressor sucks from the flash evaporation problem with liquid coolant; Meanwhile, fixed expansion valve, cost is lower, and structure is more reliable.
The air-conditioner set that the embodiment of the present invention provides, also the first expansion valve and the second expansion valve can be selected to be adjustable expansion valve, in order to ensure that this air-conditioner set has higher running status, prioritizing selection first expansion valve and the second expansion valve are fixed restriction orifice plate, this fixed restriction orifice plate has regulating power, but regulating power is lower.Certainly, the first expansion valve and the second expansion valve also can be other expansion valves, and the embodiment of the present invention is not done this and limited particularly.
For the ease of regulating, in the air-conditioner set that above-described embodiment provides, 3rd expansion valve is electric expansion valve, be convenient to the adjustment of the 3rd expansion valve like this, control system also can adopt tank level control system simultaneously, carries out Flow-rate adjustment mode regulate continuously based on the change of the second heat exchanger (First Heat Exchanger) liquid level.Certainly, the 3rd expansion valve also can be other expansion valves, such as choke valve, capillary, variable-frequency restricting orifice, heating power expansion valve etc., and the embodiment of the present invention is not done this and limited particularly, as long as can ensure that the 3rd expansion valve is adjustable.
Preferably, in the air-conditioner set that above-described embodiment provides, compressor is split-compressor, and the gas outlet of flash evaporation is connected with the secondary inlet mouth of compressor.Certainly, compressor also can be compound compressor, then flash evaporation is two-stage or Multi-stage flash hair device, concrete, and compressor is three-stage blower, and flash evaporation is secondary flash evaporation; Compressor is four-stage compressor, and flash evaporation is three grades of flash evaporations.Preferably, compressor is three-stage blower, and flash evaporation is secondary flash evaporation, and the one-level gas outlet of flash evaporation is connected with the secondary inlet mouth of compressor, and the secondary gas outlet of flash evaporation is connected with three grades of air inlets of compressor.
The air-conditioner set that the embodiment of the present invention provides, can be the air-conditioner set of separate refrigeration, also can be the air-conditioner set (heat pump) heated separately, or the air-conditioner set for heating and freeze, and the type of the embodiment of the present invention to this air-conditioner set does not limit.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. an air-conditioner set, comprise compressor, the second heat exchanger be connected with described compressor respectively and First Heat Exchanger, connect the first tube connector of described First Heat Exchanger and described second heat exchanger, is serially connected with the first expansion valve on described first tube connector, economizer and the second expansion valve; Wherein, described compressor is split-compressor or compound compressor, described economizer is connected with described compressor, and described first expansion valve is between described First Heat Exchanger and described economizer, and described second expansion valve is between described second heat exchanger and described economizer; It is characterized in that, described air-conditioner set also comprises:
Connect the second tube connector of described second heat exchanger and described First Heat Exchanger;
Be serially connected with described second tube connector and adjustable 3rd expansion valve.
2. air-conditioner set according to claim 1, is characterized in that, described first expansion valve and described second expansion valve are fixed expansion valve.
3. air-conditioner set according to claim 1, is characterized in that, described first expansion valve and described second expansion valve are fixed restriction orifice plate.
4. air-conditioner set according to claim 1, is characterized in that, described 3rd expansion valve is electric expansion valve.
5. according to the air-conditioner set in claim 1-4 described in any one, it is characterized in that, described compressor is split-compressor, and the gas outlet of described economizer is connected with the secondary inlet mouth of described compressor.
6. according to the air-conditioner set in claim 1-4 described in any one, it is characterized in that, described compressor is three-stage blower, described economizer is secondary economizer, the one-level gas outlet of described economizer is connected with the secondary inlet mouth of described compressor, and the secondary gas outlet of described economizer is connected with three grades of air inlets of described compressor.
7. an air-conditioner set, comprise compressor, the second heat exchanger be connected with described compressor respectively and First Heat Exchanger, connect the first tube connector of described First Heat Exchanger and described second heat exchanger, is serially connected with the first expansion valve on described first tube connector, flash evaporation and the second expansion valve; Wherein, described compressor is split-compressor or compound compressor, described flash evaporation is connected with described compressor, and described first expansion valve is between described First Heat Exchanger and described flash evaporation, and described second expansion valve is between described second heat exchanger and described flash evaporation; It is characterized in that, described air-conditioner set also comprises:
Connect the second tube connector of described second heat exchanger and described First Heat Exchanger;
Be serially connected with described second tube connector and adjustable 3rd expansion valve.
8. air-conditioner set according to claim 7, is characterized in that, described first expansion valve and described second expansion valve are fixed expansion valve.
9. air-conditioner set according to claim 7, is characterized in that, described first expansion valve and described second expansion valve are fixed restriction orifice plate.
10. air-conditioner set according to claim 7, is characterized in that, described 3rd expansion valve is electric expansion valve.
11. air-conditioner set according to any one of claims of claim 7-10, it is characterized in that, described compressor is split-compressor, and the gas outlet of described flash evaporation is connected with the secondary inlet mouth of described compressor.
12. air-conditioner set according to any one of claims of claim 7-10, it is characterized in that, described compressor is three-stage blower, described flash evaporation is secondary flash evaporation, the one-level gas outlet of described flash evaporation is connected with the secondary inlet mouth of described compressor, and the secondary gas outlet of described flash evaporation is connected with three grades of air inlets of described compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310332245.XA CN104344610B (en) | 2013-08-01 | 2013-08-01 | Air-conditioner set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310332245.XA CN104344610B (en) | 2013-08-01 | 2013-08-01 | Air-conditioner set |
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| CN104344610A true CN104344610A (en) | 2015-02-11 |
| CN104344610B CN104344610B (en) | 2016-08-24 |
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| CN201310332245.XA Active CN104344610B (en) | 2013-08-01 | 2013-08-01 | Air-conditioner set |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969556A (en) * | 2016-12-31 | 2017-07-21 | 广州市粤联水产制冷工程有限公司 | A kind of flash type economizer and cooling cycle system |
| CN109469987A (en) * | 2018-09-26 | 2019-03-15 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method |
| CN109855322A (en) * | 2019-02-21 | 2019-06-07 | 珠海格力电器股份有限公司 | A kind of throttling method and unit of the unit improving heat exchange efficiency |
| CN112097424A (en) * | 2020-09-17 | 2020-12-18 | 珠海格力电器股份有限公司 | Refrigerating system, air supply control method and device and air conditioning equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969556A (en) * | 2016-12-31 | 2017-07-21 | 广州市粤联水产制冷工程有限公司 | A kind of flash type economizer and cooling cycle system |
| CN109469987A (en) * | 2018-09-26 | 2019-03-15 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method |
| CN109855322A (en) * | 2019-02-21 | 2019-06-07 | 珠海格力电器股份有限公司 | A kind of throttling method and unit of the unit improving heat exchange efficiency |
| CN112097424A (en) * | 2020-09-17 | 2020-12-18 | 珠海格力电器股份有限公司 | Refrigerating system, air supply control method and device and air conditioning equipment |
| CN112097424B (en) * | 2020-09-17 | 2024-03-19 | 珠海格力电器股份有限公司 | Refrigerating system, air supplementing control method and device and air conditioning equipment |
| WO2023109130A1 (en) * | 2021-12-14 | 2023-06-22 | 珠海格力电器股份有限公司 | Multi-stage compressor and air-conditioning unit |
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