CN108692478B - The control method of air-conditioning system and air-conditioning system - Google Patents

The control method of air-conditioning system and air-conditioning system Download PDF

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Publication number
CN108692478B
CN108692478B CN201810429662.9A CN201810429662A CN108692478B CN 108692478 B CN108692478 B CN 108692478B CN 201810429662 A CN201810429662 A CN 201810429662A CN 108692478 B CN108692478 B CN 108692478B
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air
heat exchanger
import
gas
export
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CN108692478A (en
Inventor
吕如兵
郑波
方金升
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/40Fluid line arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02742Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07Details of compressors or related parts
    • F25B2400/074Details of compressors or related parts with multiple cylinders

Abstract

The present invention provides a kind of air-conditioning system and the control methods of air-conditioning system.Air-conditioning system includes being sequentially connected the compressor connect, outdoor heat exchanger, indoor heat exchanger component, the first cylinder body and the second cylinder body that compressor has exhaust outlet, is arranged in parallel, and the first cylinder body has the first air inlet, and the second cylinder body has the second air inlet;Air-conditioning system further include: making-up air device, the first end of making-up air device is connected between the second import and export of outdoor heat exchanger and the first import and export of indoor heat exchanger component, the second end of making-up air device and the gas supplementing opening of compressor connect, to carry out tonifying Qi for the cavity of the first cylinder body.Using the technical solution of the application, the energy consumption of air-conditioning system can be reduced, the refrigerated dehumidification amount of air-conditioning system is improved, realizes the promotion of efficiency.

Description

The control method of air-conditioning system and air-conditioning system
Technical field
The present invention relates to air-conditioner fields, in particular to a kind of air-conditioning system and the control method of air-conditioning system.
Background technique
, it is specified that air-supply dew-point temperature is no more than 12 DEG C, therefore, in specified dehumidifying in existing fresh air dehumidifier technical standard Under working condition, the evaporating temperature of system is usually as low as 5 DEG C or hereinafter, leads to the efficiency of system under the conditions of dehumidifying operating condition It is relatively low.
A kind of air-conditioning system for realizing that evaporator cools down and dehumidifying is isolated using duplex cylinder compressor is proposed in the prior art, In the case where the evaporating pressure for undertaking exsiccation evaporator is basically unchanged, the steaming for undertaking the evaporator of cooling effect is improved Pressure is sent out, that is, reduces the pressure ratio of cooling side evaporator, the efficiency for improving entire refrigerant dehumidification system to a certain extent is horizontal. But the system is still limited by the lower evaporating pressure of dehumidify evaporimeter, causes system energy consumption height, refrigerated dehumidification amount low.
Summary of the invention
The main purpose of the present invention is to provide a kind of air-conditioning system and the control methods of air-conditioning system, to solve existing skill The problem that air conditioning energy consumption is high in art, refrigerated dehumidification amount is low.
To achieve the goals above, it according to an aspect of the invention, there is provided a kind of air-conditioning system, including is sequentially connected Compressor, outdoor heat exchanger, the indoor heat exchanger component connect, compressor have exhaust outlet, the first cylinder body for being arranged in parallel and the Two cylinder bodies, the first cylinder body have the first air inlet, and the second cylinder body has the second air inlet, wherein the exhaust outlet of compressor and room The first import and export of external heat exchanger is connected to, and the second import and export of outdoor heat exchanger and the first import and export of indoor heat exchanger component connect Logical, a part of second import and export in multiple second import and exports of indoor heat exchanger component is connected to the first air inlet, and interior is changed Rest part second import and export in multiple second import and exports of hot device assembly is connected to the second air inlet;Air-conditioning system is also wrapped Include: making-up air device, the first end of making-up air device be connected to outdoor heat exchanger second import and export and indoor heat exchanger component Between one inlet and outlet, the second end of making-up air device and the gas supplementing opening of compressor are connected, to carry out tonifying Qi for the cavity of the first cylinder body.
Further, making-up air device includes gas-liquid separator, the first import and export of gas-liquid separator and outdoor heat exchanger Second import and export connection, the second import and export of gas-liquid separator are connect with gas supplementing opening, the third inlet and outlet of gas-liquid separator and room The first import and export of interior heat exchanger assembly connects.
Further, making-up air device further include the second import and export and compressor that gas-liquid separator is set gas supplementing opening it Between tonifying Qi pipeline and the solenoid valve that is arranged on blowdown pipe road.
Further, indoor heat exchanger component includes: the first indoor heat exchanger, the first import and export of the first indoor heat exchanger It imports and exports and connects with the third of gas-liquid separator, the second import and export of the first indoor heat exchanger is connect with the first air inlet;Second Indoor heat exchanger, the first import and export of the second indoor heat exchanger and the third of gas-liquid separator are imported and exported and are connected, and are changed in second Room The second import and export of hot device is connect with the second air inlet.
Further, air-conditioning system further include: the first four-way valve, the first interface of the first four-way valve and outdoor heat exchanger First import and export connection, the second interface of the first four-way valve are connected to the second import and export of the first indoor heat exchanger, the first four-way The third interface of valve is connected to exhaust outlet, and the 4th interface of the first four-way valve is connected to the first air inlet;Second four-way valve, second The first interface of four-way valve is connected to the first import and export of outdoor heat exchanger, is changed in the second interface and second Room of the second four-way valve The second import and export of hot device is connected to, and the third interface of the second four-way valve is connected to exhaust outlet, the 4th interface of the second four-way valve and The connection of second air inlet.
Further, air-conditioning system further includes third gas-liquid separator, the second import and export of third gas-liquid separator and the The connection of two air inlets;Indoor heat exchanger component includes: the first indoor heat exchanger, the first import and export of the first indoor heat exchanger and the The third of three gas-liquid separators imports and exports connection, and the second import and export of the first indoor heat exchanger is connect with the first air inlet;Second Indoor heat exchanger, the first import and export of the second indoor heat exchanger and the third of gas-liquid separator are imported and exported and are connected, and are changed in second Room The second import and export of hot device is connect with the first import and export of third gas-liquid separator.
Further, air-conditioning system further include: the first four-way valve, the first interface of the first four-way valve and outdoor heat exchanger First import and export connection, the second interface of the first four-way valve are connected to the second import and export of the first indoor heat exchanger, the first four-way The third interface of valve is connected to exhaust outlet, and the 4th interface of the first four-way valve is connected to the first air inlet;Second four-way valve, second The first interface of four-way valve is connected to the first import and export of outdoor heat exchanger, the second interface and third gas-liquid point of the second four-way valve Second import and export connection from device, the third interface of the second four-way valve is connected to exhaust outlet, the 4th interface of the second four-way valve and The connection of second air inlet.
Further, air-conditioning system further includes first throttle valve, and first throttle valve is located at the first end and of making-up air device Between the first import and export of one indoor heat exchanger, and/or, air-conditioning system further includes second throttle, and second throttle is located at benefit Between the first end of device of air and the first import and export of the second indoor heat exchanger.
Further, air-conditioning system further include: the first gas-liquid separator, one end of the first gas-liquid separator and the first air inlet Mouth connection, the second end of the first gas-liquid separator are connect with the first four-way valve;Second gas-liquid separator, the second gas-liquid separator One end is connect with the second air inlet, and the second end of the second gas-liquid separator is connect with the second four-way valve.
Further, air-conditioning system further includes third throttle valve, and third throttle valve is located outside the second disengaging of heat exchanger Between mouth and the first end of making-up air device.
According to another aspect of the present invention, a kind of control method of air-conditioning system is provided, control method is using above-mentioned Air-conditioning system is controlled, and control method includes carrying out the tonifying Qi step of tonifying Qi for the first cylinder body by making-up air device.
Further, before tonifying Qi step, control method further includes detecting the delivery temperature t of compressordisThe step of and Judgment step.
Further, judgment step includes: the delivery temperature t that judgement detectsdisWhether set temperature is more than or equal to, such as Fruit is then to open making-up air device, executes tonifying Qi step;If it is not, then executing the step of closing making-up air device.
It applies the technical scheme of the present invention, due to being provided with making-up air device, tonifying Qi can be carried out to the first cylinder body, fill into the The intracorporal gas temperature of one cylinder is lower than the gas temperature in compressor, to make the delivery temperature of the compressor after tonifying Qi lower than benefit Delivery temperature before gas increases the inspiratory volume of compressor, increases cold medium flux, and then reached Gas-supplying enthalpy-increasing effect. Therefore, by above-mentioned setting, the energy consumption of air-conditioning system is reduced, the refrigerated dehumidification amount of air-conditioning system is improved, realizes air-conditioning The promotion of system energy efficiency.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram of the refrigeration mode of the embodiment one of air-conditioning system according to the present invention, and (wherein, arrow shows The flow direction of refrigerant is gone out);
Fig. 2 shows the schematic diagram of the heating mode of the embodiment one of air-conditioning system of the invention, (wherein, arrow is shown The flow direction of refrigerant);
Fig. 3 shows schematic diagram (wherein, the solid arrow expression refrigeration mode of the embodiment two of air-conditioning system of the invention The flow direction of lower refrigerant, dotted arrow indicate the flow direction of refrigerant under heating mode);And
Fig. 4 shows the flow chart of the control method of air-conditioning system of the invention.
Wherein, the above drawings include the following reference numerals:
10, compressor;11, the first cylinder body;12, the second cylinder body;13, exhaust outlet;20, making-up air device;21, gas-liquid separation Device;22, solenoid valve;23, tonifying Qi pipeline;31, the first gas-liquid separator;32, the second gas-liquid separator;33, third gas-liquid separation Device;40, outdoor heat exchanger;50, indoor heat exchanger component;51, the first indoor heat exchanger;52, the second indoor heat exchanger;61, One four-way valve;62, the second four-way valve;71, first throttle valve;72, second throttle;73, third throttle valve.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The air-conditioning system of the application can be the system of fresh air dehumidifier, can also be the system of common air-conditioning device, here Common air-conditioning device refers to the air conditioner of not air-cleaning function.
Embodiment one:
As shown in Figure 1, the embodiment of the present invention one provides a kind of air-conditioning system.The air-conditioning system of the embodiment include according to There is exhaust outlet 13, parallel connection to set for the secondary compressor 10 being connected, outdoor heat exchanger 40, indoor heat exchanger component 50, compressor 10 The first cylinder body 11 and the second cylinder body 12 set, the first cylinder body 11 have the first air inlet, and the second cylinder body 12 has the second air inlet, Wherein, the exhaust outlet 13 of compressor 10 is connected to the first import and export of outdoor heat exchanger 40, the second disengaging of outdoor heat exchanger 40 Mouth is connected to the first import and export of indoor heat exchanger component 50, one in multiple second import and exports of indoor heat exchanger component 50 Second import and export is divided to be connected to the first air inlet, the rest part second in multiple second import and exports of indoor heat exchanger component 50 Inlet and outlet are connected to the second air inlet.Air-conditioning system further includes making-up air device 20, and the first end of making-up air device 20 is connected to outdoor Between the second import and export of heat exchanger 40 and the first import and export of indoor heat exchanger component 50, the second end and pressure of making-up air device 20 The gas supplementing opening of contracting machine 10 connects, to carry out tonifying Qi for the cavity of the first cylinder body 11.
In this application, due to being provided with making-up air device 20, tonifying Qi can be carried out to the first cylinder body 11, fills into the first cylinder body Gas temperature in 11 is lower than the gas temperature in compressor 10, to make the delivery temperature of the compressor after tonifying Qi 10 lower than benefit Delivery temperature before gas increases the inspiratory volume of compressor 10, increases cold medium flux, and then reached Gas-supplying enthalpy-increasing effect Fruit.Therefore, by above-mentioned setting, the energy consumption of air-conditioning system is reduced, the refrigerated dehumidification amount of air-conditioning system is improved, realizes sky The promotion of adjusting system efficiency.
As shown in Figure 1, making-up air device 20 includes gas-liquid separator 21, gas-liquid separator 21 in the embodiment of the present invention one First import and export connect with the second import and export of outdoor heat exchanger 40, the second import and export of gas-liquid separator and gas supplementing opening connect It connects, the third inlet and outlet of gas-liquid separator 21 are connect with the first import and export of indoor heat exchanger component 50.
In cooling mode, the liquid refrigerants flowed out by outdoor heat exchanger 40 by gas-liquid separator 21 first import and export stream Enter.After gas-liquid separation, gaseous coolant flows into gas supplementing opening by the second import and export of gas-liquid separator 21, to the of compressor 10 One cylinder body 11 carries out tonifying Qi, and liquid refrigerants flows into the first of indoor heat exchanger component 50 by the third inlet and outlet of gas-liquid separator 21 Inlet and outlet.By above-mentioned setting, the gaseous coolant mass dryness fraction into gas supplementing opening is improved, avoids entering compressor 10 by gas supplementing opening Gaseous coolant is mingled with drop, causes the liquid hammer problem of compressor 10.
As shown in Figure 1, making-up air device 20 further includes second that gas-liquid separator 21 is arranged in the embodiment of the present invention one The solenoid valve 22 importing and exporting the tonifying Qi pipeline 23 between the gas supplementing opening of compressor 10 and being arranged on tonifying Qi pipeline 23.
By above-mentioned setting, solenoid valve 22 can control the on-off of tonifying Qi pipeline, according to the operating condition of air-conditioning system and Environment temperature controls whether to facilitate control for 10 tonifying Qi of compressor.
As shown in Figure 1, in the embodiment of the present invention one, indoor heat exchanger component 50 includes the first indoor heat exchanger 51 and the Two indoor heat exchangers 52.The first import and export of first indoor heat exchanger 51 and the third of gas-liquid separator 21 are imported and exported and are connected, the The second import and export of one indoor heat exchanger 51 is connect with the first air inlet of the first cylinder body 11;The first of second indoor heat exchanger 52 Inlet and outlet and the third of gas-liquid separator 21 are imported and exported and are connected, the second import and export of the second indoor heat exchanger 52 and the second cylinder body 12 The second air inlet connection.
Specifically, in cooling mode, by the operative liquid refrigerant of the third inlet and outlet outflow of gas-liquid separator 21 through the The first import and export of one indoor heat exchanger 51 flows into, and is sent into and compresses through the first air inlet after exchanging heat in the first indoor heat exchanger 51 First cylinder body 11 of machine 10;It is changed by the rest part liquid refrigerants of the third inlet and outlet outflow of gas-liquid separator 21 through the first interior The first import and export of hot device 51 flows into, and is sent into the of compressor 10 through the second air inlet after exchanging heat in the second indoor heat exchanger 52 Two cylinder bodies 12.
Preferably, in cooling mode, the first indoor heat exchanger 51 is cryogenic vaporizer, and the second indoor heat exchanger 52 is height Warm evaporator flows into the saturation temperature of the liquid refrigerants of the first indoor heat exchanger 51 lower than inflow second Room by gas-liquid separator 21 The saturation temperature of the liquid refrigerants of interior heat exchanger 52, the liquid for flowing into the first indoor heat exchanger 51 and the second indoor heat exchanger 52 are cold The saturation temperature difference of matchmaker is 3 DEG C to 10 DEG C.Above-mentioned setting makes liquid refrigerants enter cryogenic vaporizer evaporation endothermic, steams to by low temperature Hair device air be evaporated, dehumidification treatments;Into the liquid refrigerants evaporation endothermic of high-temperature evaporator, to by high-temperature evaporator Air be evaporated, cooling processing, make cool down and dehumidify separating treatment, improve the vapor pres- sure of indoor heat exchanger component 50 Power, and making-up air device 20 is arranged to the first cylinder body 11 connecting with cryogenic vaporizer, effectively reduce the first cylinder in compressor 10 The pressure ratio of body 11 and the second cylinder body 12, to realize the promotion of system energy efficiency.
As shown in Figure 1, air-conditioning system further includes first throttle valve 71, first throttle valve 71 in the embodiment of the present invention one It is located between the first end of making-up air device 20 and the first import and export of the first indoor heat exchanger 51, air-conditioning system further includes the second section Valve 72 is flowed, second throttle 72 is located between the first end of making-up air device 20 and the first import and export of the second indoor heat exchanger 52.
Specifically, the first end of first throttle valve 71 and the third of gas-liquid separator 21, which are imported and exported, connects, first throttle valve 71 second end is connect with the first import and export of the first indoor heat exchanger 51;The first end and gas-liquid separator of second throttle 72 21 third imports and exports connection, and the second end of second throttle 72 is connect with the first import and export of the second indoor heat exchanger 52.
Preferably, the first throttle valve 71 in the application and second throttle 72 are electric expansion valve.It is swollen by electronics The temperature for the refrigerant for entering the room heat exchanger assembly 50 is adjusted in swollen valve control, makes into the cold of the first indoor heat exchanger 51 There is the saturation temperature difference between matchmaker and the refrigerant for entering the second indoor heat exchanger 52, and then the refrigeration of air-conditioning system and dehumidifying are separated Come, improves the refrigerated dehumidification amount of system, improve system energy efficiency.
As shown in Figure 1, in the embodiment of the present invention, air-conditioning system further includes third throttle valve 73, third throttle valve 73 Between the second import and export of outdoor heat exchanger 40 and the first end of making-up air device 20.
By the adjusting of the aperture of third throttle valve 73, the control to liquid refrigerants liquid supply rate is realized, and then guarantee air-conditioning The normal operation of system.
Preferably, the third throttle valve 73 in the application is electric expansion valve.
As shown in Figure 1, air-conditioning system further includes the first four-way valve 61 and the second four-way valve in the embodiment of the present invention one 62.The first interface of first four-way valve 61 is connected to the first import and export of outdoor heat exchanger 40, and the second of the first four-way valve 61 connects Mouth is connected to the second import and export of the first indoor heat exchanger 51, and the third interface of the first four-way valve 61 is connected to exhaust outlet 13, the 4th interface of one four-way valve 61 is connected to the first air inlet;The of the first interface of second four-way valve 62 and outdoor heat exchanger 40 One inlet and outlet connection, the second interface of the second four-way valve 62 are connected to the second import and export of the second indoor heat exchanger 52, and the two or four The third interface of port valve 62 is connected to exhaust outlet 13, and the 4th interface of the second four-way valve 62 is connected to the second air inlet.
Air-conditioning system further includes the first gas-liquid separator 31 and the second gas-liquid separator 32.The one of first gas-liquid separator 31 End is connect with the first air inlet, and the second end of the first gas-liquid separator 31 is connect with the first four-way valve 61;Second gas-liquid separator 32 one end is connect with the second air inlet, and the second end of the second gas-liquid separator 32 is connect with the second four-way valve 62.
Specifically, when refrigeration mode is run, the first cylinder body 11 of compressor 10 is connect with the first gas-liquid separator 31, and second Cylinder body 12 is connect with the second gas-liquid separator 32.First cylinder body 11 is cold through gaseous state of the first air inlet sucking from cryogenic vaporizer Matchmaker, the second cylinder body 12 suck the gaseous coolant from high-temperature evaporator through the second air inlet, and two intracorporal gaseous coolants of cylinder exist It after being compressed in compressor 10, is mixed in the discharge chamber of compressor 10, the first four-way valve 61 and second is passed through by exhaust outlet Four-way valve 62 flows to outdoor heat exchanger 40 and carries out condensation heat release.After wherein gaseous coolant is discharged by exhaust outlet, a part is through first The third interface and first interface of four-way valve 61 flow to outdoor heat exchanger 40, and another part gaseous coolant is through the second four-way valve 62 Third interface and first interface flow to outdoor heat exchanger 40.
It is real after the condensed liquid refrigerants of outdoor heat exchanger 40 enters gas-liquid separator 21 after third throttle valve Existing gas-liquid separation.Wherein, gaseous coolant flows to gas supplementing opening by the second import and export of gas-liquid separator 21, to the first of compressor 10 Cylinder body 11 carries out tonifying Qi, and the solenoid valve 22 being arranged on tonifying Qi pipeline 23 controls the on-off of tonifying Qi pipeline 23;Liquid refrigerants is by gas The third inlet and outlet of liquid/gas separator 21 flow into the first import and export of indoor heat exchanger component 50.
Liquid refrigerants is by being divided into two-way after the third inlet and outlet outflow of gas-liquid separator 21: in first throttle valve 71 and second Under the action of throttle valve 72, the refrigerants of two branches has a different saturation temperatures, and the low liquid refrigerants of saturation temperature enters the One indoor heat exchanger 51, liquid refrigerants evaporation endothermic carry out dehumidification treatments to the air for flowing through the first indoor heat exchanger 51;Saturation The high liquid refrigerants of temperature enters the second indoor heat exchanger 52, liquid refrigerants evaporation endothermic, to flowing through heat exchanger 52 in second Room Air carry out cooling processing, realize the separation of cooling and dehumidifying.
After the heat exchange of indoor heat exchanger component 50, gaseous coolant flows to the first gas-liquid separator by two four-way valves 31 and second gas-liquid separator 32.Wherein, the gaseous coolant flowed out by the first indoor heat exchanger 51 through the first four-way valve 61 Two interfaces and the 4th interface flow to the first gas-liquid separator 31;The gaseous coolant flowed out by the second indoor heat exchanger 52 is through the two or four The second interface of port valve 62 and the 4th interface flow to the second gas-liquid separator 32.Gaseous coolant is in the first gas-liquid separator 31 and After carrying out gas-liquid separation in two gas-liquid separators 32, the gaseous coolant that is flowed out by the first gas-liquid separator 31 through the first air inlet into Enter the first cylinder body 11, enters the second cylinder body 12 through the second air inlet by the gaseous coolant that the second gas-liquid separator 32 flows out, complete The circulation of entire air-conditioning system in cooling mode.
The circulation schematic diagram of the heating mode of the air-conditioning system of embodiments herein one is as shown in Figure 2.
Specifically, the first cylinder body 11 of compressor 10 is connect with the first gas-liquid separator 31, the second cylinder body 12 and the second gas Liquid/gas separator 32 connects.First cylinder body 11 sucks the gaseous coolant in outdoor heat exchanger 40, the second cylinder through the first air inlet Body 12 sucks the gaseous coolant in outdoor heat exchanger 40 through the second air inlet, and two intracorporal gaseous coolants of cylinder are in compressor It after being compressed in 10, is mixed in the discharge chamber of compressor 10, the first four-way valve 61 and the second four-way valve is passed through by exhaust outlet 62, which flow to indoor heat exchanger component 50, carries out condensation heat release.After wherein gaseous coolant is discharged by exhaust outlet, a part is through the one or four The third interface and second interface of port valve 61 flow to the first indoor heat exchanger 51, and another part gaseous coolant is through the second four-way valve 62 Third interface and second interface flow to the second indoor heat exchanger 52.
Condensed liquid refrigerants is respectively through gas-liquid separator after first throttle valve 71 and second throttle 72 throttle 21 third inlet and outlet enter gas-liquid separator 21.After refrigerant carries out gas-liquid separation in gas-liquid separator 21, gaseous coolant by The second import and export of gas-liquid separator 21 flows to gas supplementing opening, carries out tonifying Qi to the first cylinder body 11 of compressor 10, is arranged in tonifying Qi Solenoid valve 22 on pipeline 23 controls the on-off of tonifying Qi pipeline 23;Liquid refrigerants by gas-liquid separator 21 first import and export stream Out, after the throttling of third throttle valve 73, outdoor heat exchanger 40 is flowed into.
Liquid refrigerants forms gaseous coolant in outdoor heat exchanger 40 after evaporation endothermic, gaseous coolant passes through two four-way valves Flow to the first gas-liquid separator 31 and the second gas-liquid separator 32.Wherein, the part gaseous coolant flowed out by outdoor heat exchanger 40 First interface and the 4th interface through the first four-way valve 61 flow to the first gas-liquid separator 31;Flowed out by outdoor heat exchanger 40 its First interface and fourth interface of the remaining gaseous coolant through the second four-way valve 62 flow to the second gas-liquid separator 32.Gaseous coolant is After carrying out gas-liquid separation in one gas-liquid separator 31 and the second gas-liquid separator 32, the gaseous state that is flowed out by the first gas-liquid separator 31 Refrigerant enters the first cylinder body 11 through the first air inlet, the gaseous coolant flowed out by the second gas-liquid separator 32 through the second air inlet into Enter the second cylinder body 12, completes the circulation of entire air-conditioning system in a heating mode.
As shown in figure 4, the embodiment of the present invention one additionally provides a kind of control method of air-conditioning system, control method is used Above-mentioned air-conditioning system is controlled, and control method includes carrying out the tonifying Qi step of tonifying Qi for the first cylinder body 11 by making-up air device 20 Suddenly.
Before tonifying Qi step, control method further includes the steps that the delivery temperature and judgment step that detect compressor 10.
Judgment step includes: to judge whether the delivery temperature detected is more than or equal to environment temperature, is mended if it is, opening Device of air 20 executes tonifying Qi step;If it is not, then executing the step of closing making-up air device 20.
Specifically, the opening and closing of the making-up air device 20 in the application by the solenoid valve 22 being arranged on tonifying Qi pipeline 23 on-off To determine.The on-off of solenoid valve passes through environment temperature t0With compressor exhaust temperature tdisIt determines.Environment temperature t0In a certain temperature Section [t01, t02], as compressor exhaust temperature tdisMore than or equal to air-conditioning system set temperature value when, solenoid valve 22 open, From the first cylinder body 11 that the gaseous coolant separated in gas-liquid separator 21 enters compressor 10 by tonifying Qi pipeline 23 Tonifying Qi hole carries out tonifying Qi.It is mixed to fill into the gaseous coolant being partially compressed in the gaseous coolant and the first cylinder body 11 of the first cylinder body 11 It closes, effectively reduces the delivery temperature of compressor 10;As compressor exhaust temperature tdisWhen less than set temperature value, solenoid valve 22 It closes, at this point, 73 standard-sized sheet of third throttle valve, the aperture of first throttle valve 71 passes through the suction superheat of the first indoor heat exchanger 51 It adjusts, the aperture of second throttle 72 adjusted by the suction superheat of the second indoor heat exchanger 52.
Embodiment two:
Embodiment two and the difference of embodiment one are:
As shown in figure 3, air-conditioning system further includes third gas-liquid separator 33, third gas-liquid in the embodiment of the present invention two The second import and export of separator 33 is connect with the second air inlet;Indoor heat exchanger component 50 includes the first indoor heat exchanger 51 and the Two indoor heat exchangers 52, the first import and export of the first indoor heat exchanger 51 and the third of third gas-liquid separator 33 are imported and exported and are connected It connects, the second import and export of the first indoor heat exchanger 51 is connect with the first air inlet;The first import and export of second indoor heat exchanger 52 It imports and exports and connects with the third of gas-liquid separator 21, the second import and export and third gas-liquid separator 33 of the second indoor heat exchanger 52 First import and export connection.
Air-conditioning system further includes the first four-way valve 61 and the second four-way valve 62.The first interface of first four-way valve 61 and outdoor The first import and export of heat exchanger 40 is connected to, the second import and export of the second interface of the first four-way valve 61 and the first indoor heat exchanger 51 Connection, the third interface of the first four-way valve 61 are connected to exhaust outlet 13, the 4th interface and the first air inlet of the first four-way valve 61 Connection;The first interface of second four-way valve 62 is connected to the first import and export of outdoor heat exchanger 40, and the second of the second four-way valve 62 Interface is connected to the second import and export of third gas-liquid separator 33, and the third interface of the second four-way valve 62 is connected to exhaust outlet 13, 4th interface of the second four-way valve 62 is connected to the second air inlet.
As shown in figure 3, air-conditioning system further includes first throttle valve 71 and second throttle in the embodiment of the present invention two 72.Specifically, the first end of first throttle valve 71 and the third of third gas-liquid separator 33, which are imported and exported, connects, first throttle valve 71 Second end connect with the first import and export of the first indoor heat exchanger 51;The first end and gas-liquid separator 21 of second throttle 72 Third import and export connection, the second end of first throttle valve 71 connect with the first import and export of the second indoor heat exchanger 52.
Specifically, now the operating status of embodiments herein two in cooling mode is described as follows:
First cylinder body 11 of compressor 10 is connect with the first gas-liquid separator 31, the second cylinder body 12 and the second gas-liquid separator 32 connections.First cylinder body 11 through the first air inlet suck the gaseous coolant from cryogenic vaporizer, the second cylinder body 12 through second into Port sucks the gaseous coolant from high-temperature evaporator, after two intracorporal gaseous coolants of cylinder are compressed in compressor 10, It is mixed in the discharge chamber of compressor 10, flows to outdoor heat exchanger by the first four-way valve 61 and the second four-way valve 62 by exhaust outlet 40 carry out condensation heat release.After wherein gaseous coolant is discharged by exhaust outlet, third interface of a part through the first four-way valve 61 and the One interface flows to outdoor heat exchanger 40, third interface and first interface flow direction of another part gaseous coolant through the second four-way valve 62 Outdoor heat exchanger 40.
It is real after the condensed liquid refrigerants of outdoor heat exchanger 40 enters gas-liquid separator 21 after third throttle valve Existing gas-liquid separation.Wherein, gaseous coolant flows to gas supplementing opening by the second import and export of gas-liquid separator 21, to the first of compressor 10 Cylinder body 11 carries out tonifying Qi, and the solenoid valve 22 being arranged on tonifying Qi pipeline 23 controls the on-off of tonifying Qi pipeline 23;Liquid refrigerants is by gas The third inlet and outlet of liquid/gas separator 21 flow into the first import and export of indoor second indoor heat exchanger 52.
Liquid refrigerants enters evaporation endothermic after the second indoor heat exchanger 52, since 52 exchange capability of heat of the second indoor heat exchanger has Limit, liquid refrigerants only complete part evaporation in the second indoor heat exchanger 52, form the higher gas-liquid mixed refrigerant of mass dryness fraction.Mass dryness fraction Higher gas-liquid mixed refrigerant flows to third gas-liquid separator 33 by the second import and export of the second indoor heat exchanger 52, carries out again Gas-liquid separation.By the gaseous coolant separated in third gas-liquid separator 33 by the second interface of the second four-way valve 62 and the Four interfaces flow to after the second gas-liquid separator 32 carries out further gas-liquid separation, and the gaseous state flowed out by the second gas-liquid separator 32 is cold Matchmaker enters the second cylinder body 12 through the second air inlet;First throttle is passed through by the liquid refrigerants isolated in third gas-liquid separator 33 Enter 51 evaporation endothermic of the first indoor heat exchanger after the throttling cooling of valve 71, forms gaseous coolant.It is flowed by the first indoor heat exchanger 51 Second interface and fourth interface of the gaseous coolant out through the first four-way valve 61 flow to the first gas-liquid separator 31, at gas-liquid separation Gaseous coolant through the first air inlet enter the first cylinder body 11, complete the circulation of entire air-conditioning system in cooling mode.
The control method of the air-conditioning system of embodiment two is as follows:
The opening and closing of making-up air device 20 in the application is determined by the on-off for the solenoid valve 22 being arranged on tonifying Qi pipeline 23. The on-off of solenoid valve passes through environment temperature t0With compressor exhaust temperature tdisIt determines.Environment temperature t0In a certain temperature range [t01, t02] in, as the delivery temperature t of compressor 10disWhen more than or equal to set temperature value, solenoid valve 22 is opened, from gas-liquid point From the gaseous coolant separated in device 21 by tonifying Qi pipeline 23 enter compressor 10 the first cylinder body 11 on tonifying Qi hole into Row tonifying Qi.It fills into the gaseous coolant being partially compressed in the gaseous coolant and the first cylinder body 11 of the first cylinder body 11 to mix, effectively drop The low delivery temperature of compressor 10;As compressor exhaust temperature tdisWhen less than set temperature value, solenoid valve 22 is closed, at this point, The aperture of 73 standard-sized sheet of third throttle valve, first throttle valve 71 is adjusted by the suction superheat of the first indoor heat exchanger 51, the The aperture of two throttle valves 72 is adjusted by the suction superheat of the second indoor heat exchanger 52.
The other structures and connection type of the present embodiment two are the same as example 1, and details are not described herein again.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements: due to setting Making-up air device can carry out tonifying Qi to the first cylinder body, fill into the first cylinder intracorporal gas temperature lower than the gas in compressor Temperature increases the inspiratory volume of compressor to make the delivery temperature of the compressor after tonifying Qi lower than the delivery temperature before tonifying Qi Greatly, increase cold medium flux, and then reach Gas-supplying enthalpy-increasing effect.Therefore, by above-mentioned setting, the energy of air-conditioning system is reduced Consumption, improves the refrigerated dehumidification amount of air-conditioning system, realizes the promotion of air-conditioning system efficiency.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of air-conditioning system, which is characterized in that including being sequentially connected the compressor connect (10), outdoor heat exchanger (40), interior Heat exchanger assembly (50), the first cylinder body (11) and the second cylinder body that the compressor (10) has exhaust outlet (13), is arranged in parallel (12), first cylinder body (11) has the first air inlet, and second cylinder body (12) has the second air inlet, wherein described The exhaust outlet (13) of compressor (10) is connected to the first import and export of the outdoor heat exchanger (40), the outdoor heat exchanger (40) Second import and export be connected to the first import and export of the indoor heat exchanger component (50), the indoor heat exchanger component (50) A part of second import and export in multiple second import and exports is connected to first air inlet, the indoor heat exchanger component (50) Multiple second import and exports in rest part second import and export be connected to second air inlet;The air-conditioning system is also wrapped It includes:
The first end of making-up air device (20), the making-up air device (20) is connected to the second import and export of the outdoor heat exchanger (40) Between the first import and export of the indoor heat exchanger component (50), the second end of the making-up air device (20) and the compressor (10) gas supplementing opening connection, to carry out tonifying Qi for the cavity of first cylinder body (11);
The air-conditioning system further includes third gas-liquid separator (33), the second import and export of the third gas-liquid separator (33) with The second air inlet connection;The indoor heat exchanger component (50) includes:
First indoor heat exchanger (51), the first import and export of first indoor heat exchanger (51) and the third gas-liquid separator (33) third imports and exports connection, and the second import and export of first indoor heat exchanger (51) is connect with first air inlet;
Second indoor heat exchanger (52), first import and export and the gas-liquid separator (21) of second indoor heat exchanger (52) Third import and export connection, the second import and export of second indoor heat exchanger (52) and the third gas-liquid separator (33) First import and export connection.
2. air-conditioning system according to claim 1, which is characterized in that the making-up air device (20) includes gas-liquid separator (21), the first import and export of the gas-liquid separator (21) is connect with the second import and export of the outdoor heat exchanger (40), described The second import and export of gas-liquid separator is connect with the gas supplementing opening, third inlet and outlet and the room of the gas-liquid separator (21) The first import and export of interior heat exchanger assembly (50) connects.
3. air-conditioning system according to claim 2, which is characterized in that the making-up air device (20) further includes being arranged described Tonifying Qi pipeline (23) and setting between the second import and export of gas-liquid separator (21) and the gas supplementing opening of the compressor (10) Solenoid valve (22) on the tonifying Qi pipeline (23).
4. air-conditioning system according to claim 1, which is characterized in that the air-conditioning system further include:
First four-way valve (61), the first interface of first four-way valve (61) and first disengaging of the outdoor heat exchanger (40) Mouth connection, the second interface of first four-way valve (61) are connected to the second import and export of first indoor heat exchanger (51), The third interface of first four-way valve (61) is connected to the exhaust outlet (13), the 4th interface of first four-way valve (61) It is connected to first air inlet;
Second four-way valve (62), the first interface of second four-way valve (62) and first disengaging of the outdoor heat exchanger (40) Mouth connection, the second interface of second four-way valve (62) are connected to the second import and export of the third gas-liquid separator (33), The third interface of second four-way valve (62) is connected to the exhaust outlet (13), the 4th interface of second four-way valve (62) It is connected to second air inlet.
5. air-conditioning system according to claim 1, which is characterized in that the air-conditioning system further includes first throttle valve (71), the first throttle valve (71) is located at the first import and export and the third gas-liquid point of first indoor heat exchanger (51) From between device (33), and/or, the air-conditioning system further includes second throttle (72), and the second throttle (72) is located at institute It states between the first end of making-up air device (20) and the first import and export of second indoor heat exchanger (52).
6. air-conditioning system according to claim 4, which is characterized in that the air-conditioning system further include:
One end of first gas-liquid separator (31), first gas-liquid separator (31) is connect with first air inlet, described The second end of first gas-liquid separator (31) is connect with first four-way valve (61);
One end of second gas-liquid separator (32), second gas-liquid separator (32) is connect with second air inlet, described The second end of second gas-liquid separator (32) is connect with second four-way valve (62).
7. air-conditioning system according to claim 4, which is characterized in that the air-conditioning system further includes third throttle valve (73), the third throttle valve (73) is located at the second import and export and the making-up air device (20) of the outdoor heat exchanger (40) Between first end.
8. a kind of control method of air-conditioning system, which is characterized in that the control method uses any one of claims 1 to 7 The air-conditioning system is controlled, and it is first cylinder body (11) that the control method, which includes by the making-up air device (20), Carry out the tonifying Qi step of tonifying Qi.
9. control method according to claim 8, which is characterized in that before the tonifying Qi step, the control method It further include the delivery temperature t for detecting the compressor (10)disThe step of and judgment step.
10. control method according to claim 9, which is characterized in that the judgment step includes: the row that judgement detects Temperature degree tdisWhether it is more than or equal to set temperature and executes the tonifying Qi step if it is, opening the making-up air device (20);
If it is not, then executing the step of closing making-up air device (20).
CN201810429662.9A 2018-05-04 2018-05-04 The control method of air-conditioning system and air-conditioning system Active CN108692478B (en)

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CN112268378B (en) * 2020-11-18 2021-10-15 珠海格力电器股份有限公司 Heat pump system, control method and control device thereof, air conditioning equipment and storage medium

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