CN204329388U - Air-conditioner - Google Patents

Air-conditioner Download PDF

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Publication number
CN204329388U
CN204329388U CN201420745011.8U CN201420745011U CN204329388U CN 204329388 U CN204329388 U CN 204329388U CN 201420745011 U CN201420745011 U CN 201420745011U CN 204329388 U CN204329388 U CN 204329388U
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pipeline
valve
heat exchanger
valve port
air
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CN201420745011.8U
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Chinese (zh)
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徐振坤
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GD Midea Air Conditioning Equipment Co Ltd
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Guangdong Midea Refrigeration Equipment Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The utility model discloses a kind of air-conditioner, comprising: compressor, commutation assembly, outdoor heat exchanger, indoor heat exchanger, flash vessel, first flow path, the second stream, bypass circulation, be used to open or close the Control Component of bypass circulation.Compressor has gas supplementing opening.Flash vessel comprises first interface, the second interface and gas vent, is communicated with all the time between gas vent with gas supplementing opening by blowdown pipe.First flow path is in series with the first electric expansion valve.Second stream is in series with the orifice union with flow regulating function.The two ends of bypass circulation are connected with indoor heat exchanger with outdoor heat exchanger respectively.It is restricting element that Control Component is formed at when opening bypass circulation.According to air-conditioner of the present utility model, the jet restriction without service condition of compressor when cooling and warming, effective returns liquid problem when solving defrosting, energy-conservation when ensureing refrigeration underload demand.

Description

Air-conditioner
Technical field
The utility model relates to refrigerating field, especially relates to a kind of air-conditioner.
Background technology
Universal due to convertible frequency air-conditioner technology, air-conditioner cooling and warming maximum capacity is on the market compared to and is greatly improved several years ago at present, and air-conditioner load regulation range also obtains accordingly and widens.But along with social development, the demand of people also improves accordingly, the demand of air-conditioner maximum capacity is also in improve, and more importantly global energy consumption, as the air conditioner industry of big power consumer, energy-conservation is inevitable trend.Generally energy-conservation is the raising of efficiency intuitively, and indirectly material cost declines also is an energy-conservation aspect in fact.Comprehensive these two aspects, gas jet technique can increase few in material cost, can larger raising maximum capacity, makes efficiency obtain certain lifting simultaneously.
Current industry gas jet technique is mainly limited to reliability, most use at low ambient temperatures, and all can increase valve (as Unidirectional solenoid valve etc.) control on tonifying Qi loop, thus close tonifying Qi when freezing, realize time liquid problem when avoiding heating and defrosting simultaneously, improve reliability.
Utility model content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the utility model proposes a kind of air-conditioner, the jet restriction without service condition of compressor when cooling and warming, return liquid problem when effectively can solve defrosting, what can also ensure when freezing underload demand is energy-conservation.
According to air-conditioner of the present utility model, comprising: compressor, described compressor has exhaust outlet, gas returning port and gas supplementing opening; Commutation assembly, described commutation assembly has the first valve port to the 4th valve port, described first valve port is communicated with one of them in described 3rd valve port with described second valve port, described 4th valve port and described second valve port are communicated with another in described 3rd valve port, described first valve port is connected with described exhaust outlet, and described 4th valve port is connected with described gas returning port; Outdoor heat exchanger and indoor heat exchanger, the first end of described outdoor heat exchanger is connected with described second valve port, and the first end of described indoor heat exchanger is connected with described 3rd valve port; Flash vessel, described flash vessel comprises first interface, the second interface and gas vent, is communicated with all the time between described gas vent with described gas supplementing opening by blowdown pipe; First flow path, the two ends of described first flow path are connected with described first interface with the second end of described outdoor heat exchanger respectively, described first flow path are in series with the first electric expansion valve; Second stream, the two ends of described second stream are connected with the second end of described indoor heat exchanger with described second interface respectively, and described second stream is in series with the orifice union with flow regulating function; Bypass circulation, the two ends of described bypass circulation are connected with the second end of described indoor heat exchanger with the second end of described outdoor heat exchanger respectively; Be used to open or close the Control Component of described bypass circulation, it is restricting element that described Control Component is formed at when opening described bypass circulation.
According to air-conditioner of the present utility model, can realize heating refrigeration full working scope to run, the jet restriction without service condition of compressor when cooling and warming, returns liquid problem when also effectively can solve defrosting simultaneously, and what can also ensure when freezing underload demand is energy-conservation.
In examples more of the present utility model, described orifice union is the second electric expansion valve.
In other examples of the present utility model, first throttle valve and the bidirectional electromagnetic valve of to be the capillary of series connection and bidirectional electromagnetic valve or described orifice union the be series connection of described orifice union.
In examples more of the present utility model, second throttle and the Unidirectional solenoid valve of to be the capillary of series connection and Unidirectional solenoid valve or described Control Component the be series connection of described Control Component.
In other examples of the present utility model, described Control Component is the 3rd electric expansion valve.
Preferably, described commutation assembly is cross valve.
According to specific embodiments more of the present utility model, air-conditioner also comprises the first pipeline to the 5th pipeline, the first end of described first pipeline is connected with the second end of described outdoor heat exchanger, the first end of described second pipeline is connected with described first interface, the first end of described 3rd pipeline is connected with described second interface, the described first end of the 4th pipeline is connected with the second end of described indoor heat exchanger, second end of described first pipeline is connected by the first three-way pipe with the second end of described second pipeline, second end of described 3rd pipeline is connected by the second three-way pipe with the second end of described 4th pipeline, the two ends of described 5th pipeline are connected with described second three-way pipe with described first three-way pipe respectively, described first electric expansion valve is connected on described second pipeline, described orifice union is connected on described 3rd pipeline, described Control Component is connected on described 5th pipeline.
Accompanying drawing explanation
Stream schematic diagram when Fig. 1 is the air-conditioner refrigeration according to the utility model embodiment;
Stream schematic diagram when Fig. 2 is the air conditioner heat-production according to the utility model embodiment;
Fig. 3 be according to the air-conditioner of the utility model embodiment be in defrosting mode one, underload energy saver mode one, refrigeration unloading mode time stream schematic diagram;
Fig. 4 is stream schematic diagram when being in defrosting mode two, underload energy saver mode two according to the air-conditioner of the utility model embodiment;
Fig. 5 is the schematic diagram of the air-conditioner according to the utility model embodiment, and wherein orifice union is bidirectional electromagnetic valve and the choke valve of series connection.
Reference numeral:
Air-conditioner 100,
Compressor 1, exhaust outlet a, gas returning port b, gas supplementing opening c,
Commutation assembly 2, first valve port d, the second valve port e, the 3rd valve port f, the 4th valve port g,
Outdoor heat exchanger, indoor heat exchanger 4,
Flash vessel 5, first interface h, the second interface i, gas vent j,
First electric expansion valve 6, orifice union 7, first throttle valve 70, bidirectional electromagnetic valve 71,
Control Component 8, second throttle 80, Unidirectional solenoid valve 81,
First pipeline 9, second pipeline 10, the 3rd pipeline 11, the 4th pipeline 12, the 5th pipeline 13,
First three-way pipe 14, second three-way pipe 15, indoor and outdoor stop valve 16, blowdown pipe 17.
Detailed description of the invention
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
Describe the air-conditioner 100 according to the utility model embodiment in detail below with reference to Fig. 1-Fig. 5, wherein air-conditioner 100 has refrigeration mode, heating mode, defrosting mode one, defrosting mode two, underload energy saver mode one, underload energy saver mode two, refrigeration unloading mode.
As Figure 1-Figure 5, according to the air-conditioner 100 of the utility model embodiment, comprising: compressor 1, commutation assembly 2, outdoor heat exchanger 3, indoor heat exchanger 4, flash vessel 5, first flow path, the second stream, bypass circulation and Control Component 8.Wherein compressor 1 has exhaust outlet a, gas returning port b and gas supplementing opening c, and that is, compressor 1 is jet compressor, needs to be described, and the structure of jet compressor 1 and operation principle etc. are prior art, are just not described in detail here.
Commutation assembly 2 has the first valve port d, the second valve port e, the 3rd valve port f and the 4th valve port g, first valve port d is communicated with one of them in the 3rd valve port f with the second valve port e, 4th valve port g and the second valve port e are communicated with another in the 3rd valve port f, first valve port d is connected with exhaust outlet a, 4th valve port g is connected with gas returning port b, that is, when the first valve port d is communicated with the second valve port e, the 3rd valve port f is communicated with the 4th valve port g.When the first valve port d is communicated with the 3rd valve port f, then the second valve port e is communicated with the 4th valve port g.
The first end of outdoor heat exchanger 3 is connected with the second valve port e, and the first end of indoor heat exchanger 4 is connected with the 3rd valve port f.Flash vessel 5 comprises first interface h, the second interface i and gas vent j, is communicated with all the time between gas vent j with gas supplementing opening c by blowdown pipe 17, needs to be described, and the structure of flash vessel 5 and operation principle etc. have been prior art, are just not described in detail here.Be understandable that, be communicated with all the time by blowdown pipe 17 between gas vent j and gas supplementing opening c, refer on blowdown pipe 17 without any valve and mechanical or electronic-controlled installation.
The two ends of first flow path are connected with first interface h with the second end of outdoor heat exchanger 3 respectively, first flow path is in series with the first electric expansion valve 6, wherein, the aperture of the first electric expansion valve 6 is adjustable, thus make the first electric expansion valve 6 not only can open or close first flow path, the effect of reducing pressure by regulating flow can be played simultaneously when first flow path circulation refrigerant to refrigerant, and the flow of refrigerant can also be regulated.
The two ends of the second stream are connected with the second end of indoor heat exchanger 4 with the second interface i respectively, second stream is in series with the orifice union 7 with flow regulating function, that is, orifice union 7 not only can open or close the second stream, when the second stream circulation refrigerant, orifice union 7 can play the effect of reducing pressure by regulating flow to refrigerant simultaneously, and can also regulate the flow of refrigerant.In examples more of the present utility model, as Figure 1-Figure 4, orifice union 7 is the second electric expansion valve.In other examples of the present utility model, orifice union 7 is the capillary of series connection and bidirectional electromagnetic valve 71 or orifice union 7 be the first throttle valve 70 and bidirectional electromagnetic valve 71 (as shown in Figure 5) of connecting, in this example, by being provided with bidirectional electromagnetic valve 71, the refluence of refrigerant can be avoided.
The two ends of bypass circulation are connected with the second end of indoor heat exchanger 4 with the second end of outdoor heat exchanger 3 respectively.Control Component 8 is used to open or close bypass circulation, and it is restricting element that Control Component 8 is formed at when opening bypass circulation, and that is, when bypass circulation is opened, Control Component 8 plays the effect of reducing pressure by regulating flow to the refrigerant flowing through bypass circulation.In examples more of the present utility model, Control Component 8 is capillary and the Unidirectional solenoid valve 81 of series connection, or Control Component 8 is second throttle 80 and the Unidirectional solenoid valve 81 (as Figure 1-Figure 5) of series connection.It is appreciated of course that Control Component 8 can also be the 3rd electric expansion valve.
Be understandable that, air-conditioner 100 also comprises frequency-variable controller (scheming not shown), and frequency-variable controller is connected to control compressor 1 with compressor 1, the assembly 2 that commutates, orifice union 7, first electric expansion valve 6 with Control Component 8, the duty of the assembly 2 that commutates, orifice union 7, first electric expansion valve 6 and Control Component 8.
Carry out describing to several mode of operations of the air-conditioner 100 according to the utility model embodiment below:
Refrigeration mode: two cardiopulmonary bypass in beating hearts, as shown in Figure 1, high temperature and high pressure gas refrigerant enters outdoor heat exchanger 3 heat exchange by the exhaust outlet a of compressor 1 through commutation assembly 2, is condensed into liquid refrigerants after heat exchange completes.First electric expansion valve 6 of liquid refrigerants in first flow path realizes the refrigerant that a throttling becomes medium temperature and medium pressure state, and the refrigerant of medium temperature and medium pressure enters into flash vessel 5 through first interface h and is separated into two-way:
The first via: it is that then low temperature enters indoor heat exchanger 4 and carry out heat exchange that the orifice union 7 of liquid refrigerants on the second stream carries out second throttle, be evaporated to gas after heat exchange completes and pass through the gas returning port b that compressor 1 got back to by commutation assembly 2, being compressed into high temperature and high pressure gas discharge afterwards and entering next circulation.
Second tunnel: the gas supplementing opening c directly being arrived compressor 1 by the gas separated in flash vessel 5 through blowdown pipe 17, carries out jet, enters the gas returning port b gas and vapor permeation be compressed to a certain degree carry out compressing rear discharge again with the first via, enters next circulation.Under this pattern, Control Component 8 controls bypass circulation closedown, and therefore bypass circulation is without refrigerant circulation.Now need to coordinate control first electric expansion valve 6 to be aperture of freezing with the aperture of orifice union 7.
Heating mode: two circulations side by side, as shown in Figure 2.High temperature and high pressure gas refrigerant enters indoor heat exchanger 4 by the exhaust outlet a of compressor 1 through commutation assembly 2 and carries out heat exchange, after heat exchange completes, refrigerant is condensed into liquid refrigerants, and liquid refrigerants inflow second Lu Bingjing orifice union 7 carries out first time throttling and becomes medium temperature and medium pressure state.The refrigerant of medium temperature and medium pressure state enters into flash vessel 5 through the second interface i to carry out being separated into two-way.
The first via: it is low temperature that first electric expansion valve 6 of liquid refrigerants in first flow path carries out second time throttling, the refrigerant of low temperature enters into outdoor heat exchanger 3 and carries out heat exchange, gas is flashed to after heat exchange completes, this gas gets back to the gas returning port b of compressor 1 through commutation assembly 2, is compressed into high temperature and high pressure gas discharge afterwards and enters next circulation.
Second tunnel: the gas supplementing opening c directly being arrived compressor 1 by the gas separated in flash vessel 5 through blowdown pipe 17, carries out jet, enters the gas returning port b gas and vapor permeation be compressed to a certain degree carry out compressing rear discharge again with the first via, enters next circulation.Under this pattern, Control Component 8 controls bypass circulation closedown, and therefore bypass circulation is without refrigerant circulation, now needs to coordinate the aperture of control first electric expansion valve 6 and orifice union 7 for heating aperture.
Defrosting mode one: three cardiopulmonary bypass in beating heart, as shown in Figure 3, high temperature and high pressure gas refrigerant enters outdoor heat exchanger 3 heat exchange by the exhaust outlet a of compressor 1 through commutation assembly 2, is condensed into liquid refrigerants after heat exchange completes.The liquid refrigerants that heat exchanger 3 is discharged outdoor is divided into two-way: first electric expansion valve 6 of the first via in first flow path realizes the refrigerant that a throttling becomes medium temperature and medium pressure state, and the refrigerant of medium temperature and medium pressure enters into flash vessel 5 through first interface h to carry out being separated into two parts.
It is that then low temperature enters indoor heat exchanger 4 and carry out heat exchange that the orifice union 7 of Part I refrigerant on the second stream carries out second throttle, be evaporated to gas after heat exchange completes and pass through the gas returning port b that compressor 1 got back to by commutation assembly 2, being compressed into high temperature and high pressure gas discharge afterwards and entering next circulation.
Part II is directly arrived the gas supplementing opening c of compressor 1 through blowdown pipe 17 by the gas coolant separated in flash vessel 5, carry out jet, enter the gas returning port b gas and vapor permeation be compressed to a certain degree with Part I to carry out again compressing rear discharge, enter next circulation.
The second tunnel that the liquid refrigerants that heat exchanger 3 is discharged outdoor separates is after the throttling of the Control Component 8 on bypass circulation, enter into indoor heat exchanger 4 and carry out heat exchange, flash to gas after heat exchange is complete and get back to compressor 1 gas returning port b through commutation assembly 2, being compressed into high temperature and high pressure gas discharge afterwards and entering next circulation.Under this pattern, Control Component 8 controls bypass circulation and opens, and bypass circulation regards the 3rd tunnel circulation as, now needs to coordinate control first electric expansion valve 6 to be defrost aperture with the aperture of orifice union 7.
Circulate in defrosting mode two: tunnel, as shown in Figure 4.High temperature and high pressure gas refrigerant enters outdoor heat exchanger 3 heat exchange by the exhaust outlet a of compressor 1 through commutation assembly 2, is condensed into liquid refrigerants after heat exchange completes.The liquid refrigerants of heat exchanger 3 discharge is outdoor after the throttling of the Control Component 8 on bypass circulation, enter into indoor heat exchanger 4 and carry out heat exchange, flash to gas after heat exchange is complete and get back to compressor 1 gas returning port b through commutation assembly 2, being compressed into high temperature and high pressure gas discharge afterwards and entering next circulation.Under this pattern, Control Component 8 controls bypass circulation and opens, and bypass circulation is unimpeded, and in addition in this mode, the aperture of the first electric expansion valve 6 and orifice union 7 is zero or very little, and relative bypass circulation flow is ignored, and approximately regards cut-off as.
Underload energy saver mode one: see Fig. 3.Workflow realizes identical with defrosting mode one, and difference is for need coordinate frequency-variable controller, and the frequency of compressor 1 is low frequency, and the aperture of the first electric expansion valve 6 and orifice union 7 controls as underload energy saver mode aperture.
Underload energy saver mode two: see Fig. 4.Workflow realizes identical with defrosting mode two, and difference is for need coordinate frequency-variable controller, and the frequency of compressor 1 is low frequency, and the aperture of the first electric expansion valve 6 and orifice union 7 controls as underload energy saver mode aperture.
Refrigeration unloading mode: three parallel circulatings, is shown in Fig. 3.When system loading is too high, operating pressure and electric current excessive time, threatened system reliability; by reasonably selecting Control Component 8, the Control Component 8 opened on bypass circulation unloads, by the very fast balance system pressure of energy; without the need to shutting down, reach the object of protection system.Refrigerant flow direction is identical with defrosting mode one.
According to the air-conditioner 100 of the utility model embodiment, owing to being communicated with all the time by blowdown pipe 17 between the gas supplementing opening c of compressor 1 and the gas vent j of flash vessel 5, therefore this air-conditioner 100 is open jet all the time when refrigeration mode and heating mode, no longer opens for a certain specific condition.Simultaneously by being provided with bypass circulation, bypass circulation is provided with Control Component 8, when defrosting mode one and defrosting mode two, open and the aperture of the first electric expansion valve 6 and orifice union 7 by controlling Control Component 8, realize quick defrost and time liquid avoiding gas supplementing opening c, reach the object improving comfortableness and reliability.And this air-conditioner 100 adopts jet scheme not only can improve cooling and warming maximum capacity, controlled with the coordinating of aperture of the first electric expansion valve 6 and orifice union 7 by the unlatching of bypass circulation simultaneously, can demand when greatly limit ensures low frequency underload, thus reach energy-conservation object.
In brief, according to the air-conditioner 100 of the utility model embodiment, can realize heating refrigeration full working scope to run, the jet restriction without service condition of compressor 1 when cooling and warming, return liquid problem when also effectively can solve defrosting, what can also ensure when freezing underload demand is energy-conservation simultaneously.
As Figure 1-Figure 5, in preferred embodiment of the present utility model, commutation assembly 2 is cross valve, thus makes the structure of air-conditioner 100 simple.It is appreciated of course that, the structure of commutation assembly 2 is not limited thereto, commutation assembly 2 can also comprise the first pipeline to the 4th pipeline, first pipeline joins end to end successively to the 4th pipeline, first pipeline is in series with the first magnetic valve, second pipe is in series with the second magnetic valve, 3rd pipeline is in series with the 3rd magnetic valve, 4th pipeline is in series with the 4th magnetic valve, the junction of the first pipeline and second pipe limits the first valve port d, the junction of the first pipeline and the 4th pipeline limits the second valve port e, the junction of the 4th pipeline and the 3rd pipeline limits the 4th valve port g, the junction of the 3rd pipeline and second pipe limits the 3rd valve port f, and the first magnetic valve and the 3rd magnetic valve are opened simultaneously or close, and the second magnetic valve and the 4th magnetic valve are opened simultaneously or close.
In specific embodiment of the utility model, as Figure 1-Figure 5, air-conditioner 100 also comprises the first pipeline 9 to the 5th pipeline 13, the first end of the first pipeline 9 is connected with the second end of outdoor heat exchanger 3, the first end of the second pipeline 10 is connected with first interface h, the first end of the 3rd pipeline 11 is connected with the second interface i, the first end of the 4th pipeline 12 is connected with the second end of indoor heat exchanger 4, second end of the first pipeline 9 is connected by the first three-way pipe 14 with the second end of the second pipeline 10, second end of the 3rd pipeline 11 is connected by the second three-way pipe 15 with the second end of the 4th pipeline 12, the two ends of the 5th pipeline 13 are connected with the second three-way pipe 15 with the first three-way pipe 14 respectively, first electric expansion valve 6 is connected on the second pipeline 10, orifice union 7 is connected on the 3rd pipeline 11, Control Component 8 is connected on the 5th pipeline 13.
First pipeline 9 and the second pipeline 10 limit first flow path thus, and the 3rd pipeline 11 and the 4th pipeline 12 limit the second stream, and the first pipeline 9, the 5th pipeline 13 and the 4th pipeline 12 limit bypass circulation.Thus it is simple according to the structure of the air-conditioner 100 of the utility model embodiment.
Below with reference to Fig. 1-Fig. 4, the air-conditioner 100 according to the utility model specific embodiment is described in detail, in this embodiment, commutation assembly 2 is cross valve, air-conditioner 100 comprises the first pipeline 9 to the 5th pipeline 13, and the first pipeline 9 and the second pipeline 10 limit first flow path, 3rd pipeline 11 and the 4th pipeline 12 limit the second stream, first pipeline 9, 5th pipeline 13 and the 4th pipeline 12 limit bypass circulation, orifice union 7 is the second electric expansion valve, Control Component 8 is second throttle 80 and the Unidirectional solenoid valve 81 of series connection, first electric expansion valve 6 is connected on the second pipeline 10, orifice union 7 is connected on the 3rd pipeline 11, Control Component 8 is connected on the 5th pipeline 13.The indoor set of air-conditioner 100 is connected by indoor and outdoor stop valve 16 with off-premises station simultaneously.
Refrigeration mode: two cardiopulmonary bypass in beating hearts, is shown in Fig. 1.High temperature and high pressure gas is by the exhaust outlet a → be condensed into liquid after outdoor heat exchanger 3 heat exchange → heat exchange completes through cross valve 2 → enter first to flow through the first three-way pipe 14 → then cross the first electric expansion valve 6 to realize a throttling be that medium temperature and medium pressure state → mono-time throttling completes and enters flash vessel 5 and carry out gas-liquid separation and become two-way → first via of compressor 1: liquid cross the second electric expansion valve 7 carry out second throttle be low temperature → priority flow through second three-way pipe 15 → indoor and outdoor stop valve 16 → enter indoor heat exchanger 4 carry out being evaporated to after heat exchange → heat exchange completes gas by indoor and outdoor stop valve 16 flow out → be compressed into high temperature and high pressure gas through cross valve 2 → get back to compressor 1 gas returning port b to discharge and enter next and circulate; Second tunnel: by the gas separated in flash vessel 5 directly through the gas supplementing opening c of blowdown pipe 17 → arrival compressor 1, carry out jet, enter the gas returning port b gas and vapor permeation be compressed to a certain degree with the first via and carry out again compressing rear discharge, enter next circulation.Under this pattern, Unidirectional solenoid valve 81 is cut-off state, and therefore bypass circulation is without refrigerant circulation.Now need to coordinate the aperture of control first electric expansion valve 6 and the second electric expansion valve 7 for aperture of freezing.
Heating mode: two cardiopulmonary bypass in beating hearts, is shown in Fig. 2.High temperature and high pressure gas by compressor 1 exhaust outlet a → carrying out being condensed into liquid after heat exchange → heat exchange completes through cross valve 2 → indoor and outdoor stop valve 16 → enter indoor heat exchanger 4 is flowed out by indoor and outdoor stop valve 16 → to carry out a throttling through the second three-way pipe 15 → cross the second electric expansion valve 7 be that medium temperature and medium pressure state → mono-time throttling completes and enters flash vessel 5 and carry out gas-liquid separation and become two-way → first via: liquid crosses the first electric expansion valve 6, and to carry out second throttle be that low temperature → through the first three-way pipe 14 → enter outdoor heat exchanger 3 carries out being evaporated to gas after heat exchange → heat exchange completes and is compressed into high temperature and high pressure gas through cross valve 2 → get back to compressor 1 gas returning port b and discharges and enter next circulation; Second tunnel: by the gas separated in flash vessel 5 directly through the gas supplementing opening c of blowdown pipe 17 → arrival compressor 1, carry out jet, enter the gas returning port b gas and vapor permeation be compressed to a certain degree with the first via and carry out again compressing rear discharge, enter next circulation.Under this pattern, Unidirectional solenoid valve 81 is cut-off state, and therefore bypass circulation is without refrigerant circulation.Now need to coordinate the aperture of control first electric expansion valve 6 and the second electric expansion valve 7 for heating aperture.
Defrosting mode one: three cardiopulmonary bypass in beating heart, is shown in Fig. 3.High temperature and high pressure gas is divided into two-way (for convenience of describing by the exhaust outlet a → be condensed into liquid stream after outdoor heat exchanger 3 heat exchange → heat exchange completes through cross valve 2 → enter of compressor 1 below through the first three-way pipe 14, the two-way be herein divided into uses the first via respectively, 3rd tunnel replaces) → first pass by the first electric expansion valve 6 to realize a throttling be that medium temperature and medium pressure state → mono-time throttling completes and enters flash vessel 5 and carry out gas-liquid separation and become two-way → first via again: liquid cross the second electric expansion valve 7 carry out second throttle be low temperature → with the 3rd tunnel the second three-way pipe 15 place converge → through indoor and outdoor stop valve 16 → enter indoor heat exchanger 4 carry out heat exchange → heat exchange complete after by indoor and outdoor stop valve 16 flow out → be compressed into high temperature and high pressure gas through cross valve 2 → get back to compressor 1 gas returning port b to discharge and enter next and circulate, second tunnel: by the gas separated in flash vessel 5 directly through the gas supplementing opening c of blowdown pipe 17 → arrival compressor 1, carry out jet, enter the gas returning port b gas and vapor permeation be compressed to a certain degree with the first via and carry out again compressing rear discharge, enter next circulation.3rd tunnel: in outdoor heat exchanger 3 heat exchange be condensed into after completing the 3rd road that liquid → flow through the first three-way pipe 14 separates flow through Unidirectional solenoid valve 81 → second throttle 80 → converge at the second three-way pipe 15 place with the first via → through indoor and outdoor stop valve 16 → enter indoor heat exchanger 4 carry out being evaporated to after heat exchange → heat exchange completes gas by indoor and outdoor stop valve 16 flow out → be compressed into high temperature and high pressure gas through cross valve 2 → get back to compressor 1 gas returning port b to discharge and enter next and circulate.Under this pattern, Unidirectional solenoid valve 81 is opening, and bypass circulation is seen and is shaped as the 3rd tunnel circulation.The aperture coordinating control first electric expansion valve 6 and the second electric expansion valve 7 is now needed to be defrost aperture.
Circulating in defrosting mode two: tunnel, sees Fig. 4.High temperature and high pressure gas by compressor 1 exhaust outlet a → through cross valve 2 → enter be condensed into after outdoor heat exchanger 3 heat exchange → heat exchange completes liquid stream through the first three-way pipe 14 → cross Unidirectional solenoid valve 81 → second throttle 80 → successively flow through afterwards second three-way pipe 15 → indoor and outdoor stop valve 16 → enter indoor heat exchanger 4 carry out heat exchange → again by indoor and outdoor stop valve 16 flow out → be compressed into high temperature and high pressure gas through cross valve 2 → get back to compressor 1 gas returning port b to discharge and enter next circulation.Under this pattern, Unidirectional solenoid valve 81 is opening, and bypass circulation is unimpeded.Now the first electric expansion valve 6 and the second electric expansion valve 7 aperture are zero or very little in addition, and relative bypass circulation flow is ignored, and are similar to and regard cut-off as.
Underload energy saver mode one: see Fig. 3.Workflow realizes identical with defrosting mode three, and difference is for need coordinate frequency-variable controller, and the frequency of compressor 1 is low frequency, and the aperture of the first electric expansion valve 6 and the second electric expansion valve 7 controls as underload energy saver mode aperture.
Underload energy saver mode two: see Fig. 4.Workflow realizes identical with defrosting mode two, and difference is for need coordinate frequency-variable controller, and the frequency of compressor 1 is low frequency, and the aperture of the first electric expansion valve 6 and the second electric expansion valve 7 controls as underload energy saver mode aperture.Under this pattern, second throttle 80 is changed to electric expansion valve effect more obvious, need supporting change control section.
Refrigeration unloading mode: three parallel circulatings, is shown in Fig. 3.When system loading is too high, operating pressure and electric current excessive time, threatened system reliability; by reasonably selecting second throttle 80, the Unidirectional solenoid valve 81 opened on bypass circulation unloads, by the very fast balance system pressure of energy; without the need to shutting down, reach the object of protection system.Refrigerant flow direction is identical with defrosting mode one.
Below to when being the first throttle valve 70 and bidirectional electromagnetic valve 71 of connecting when orifice union 7, orifice union 7 is described in the running status of different mode.
When refrigeration mode, heating mode, defrosting mode one, underload energy saver mode one and refrigeration unloading mode, bidirectional electromagnetic valve 71 is in open mode respectively, and when defrosting mode two and underload energy saver mode two, bidirectional electromagnetic valve 71 is in closed condition.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment, revises, replace and modification in scope of the present utility model.

Claims (7)

1. an air-conditioner, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet, gas returning port and gas supplementing opening;
Commutation assembly, described commutation assembly has the first valve port to the 4th valve port, described first valve port is communicated with one of them in described 3rd valve port with described second valve port, described 4th valve port and described second valve port are communicated with another in described 3rd valve port, described first valve port is connected with described exhaust outlet, and described 4th valve port is connected with described gas returning port;
Outdoor heat exchanger and indoor heat exchanger, the first end of described outdoor heat exchanger is connected with described second valve port, and the first end of described indoor heat exchanger is connected with described 3rd valve port;
Flash vessel, described flash vessel comprises first interface, the second interface and gas vent, is communicated with all the time between described gas vent with described gas supplementing opening by blowdown pipe;
First flow path, the two ends of described first flow path are connected with described first interface with the second end of described outdoor heat exchanger respectively, described first flow path are in series with the first electric expansion valve;
Second stream, the two ends of described second stream are connected with the second end of described indoor heat exchanger with described second interface respectively, and described second stream is in series with the orifice union with flow regulating function;
Bypass circulation, the two ends of described bypass circulation are connected with the second end of described indoor heat exchanger with the second end of described outdoor heat exchanger respectively;
Be used to open or close the Control Component of described bypass circulation, it is restricting element that described Control Component is formed at when opening described bypass circulation.
2. air-conditioner according to claim 1, is characterized in that, described orifice union is the second electric expansion valve.
3. air-conditioner according to claim 1, is characterized in that, first throttle valve and the bidirectional electromagnetic valve of to be the capillary of series connection and bidirectional electromagnetic valve or described orifice union the be series connection of described orifice union.
4. air-conditioner according to claim 1, is characterized in that, second throttle and the Unidirectional solenoid valve of to be the capillary of series connection and Unidirectional solenoid valve or described Control Component the be series connection of described Control Component.
5. air-conditioner according to claim 1, is characterized in that, described Control Component is the 3rd electric expansion valve.
6. air-conditioner according to claim 1, is characterized in that, described commutation assembly is cross valve.
7. air-conditioner according to claim 1, it is characterized in that, also comprise the first pipeline to the 5th pipeline, the first end of described first pipeline is connected with the second end of described outdoor heat exchanger, the first end of described second pipeline is connected with described first interface, the first end of described 3rd pipeline is connected with described second interface, the described first end of the 4th pipeline is connected with the second end of described indoor heat exchanger, second end of described first pipeline is connected by the first three-way pipe with the second end of described second pipeline, second end of described 3rd pipeline is connected by the second three-way pipe with the second end of described 4th pipeline, the two ends of described 5th pipeline are connected with described second three-way pipe with described first three-way pipe respectively, described first electric expansion valve is connected on described second pipeline, described orifice union is connected on described 3rd pipeline, described Control Component is connected on described 5th pipeline.
CN201420745011.8U 2014-12-02 2014-12-02 Air-conditioner Active CN204329388U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534732A (en) * 2014-12-02 2015-04-22 广东美的制冷设备有限公司 Air conditioner
CN107238236A (en) * 2017-05-17 2017-10-10 青岛海尔空调器有限总公司 Air-conditioning system with enthalpy increased through vapor injection and control method thereof
CN109163426A (en) * 2018-09-20 2019-01-08 珠海格力电器股份有限公司 Air conditioning control method, system and air-conditioning equipment based on volume switching

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534732A (en) * 2014-12-02 2015-04-22 广东美的制冷设备有限公司 Air conditioner
CN107238236A (en) * 2017-05-17 2017-10-10 青岛海尔空调器有限总公司 Air-conditioning system with enthalpy increased through vapor injection and control method thereof
CN107238236B (en) * 2017-05-17 2020-08-04 青岛海尔空调器有限总公司 Air-supplying enthalpy-increasing air conditioning system and control method thereof
CN109163426A (en) * 2018-09-20 2019-01-08 珠海格力电器股份有限公司 Air conditioning control method, system and air-conditioning equipment based on volume switching

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