CN105509362A - Multi-connected environment treatment system - Google Patents
Multi-connected environment treatment system Download PDFInfo
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- CN105509362A CN105509362A CN201510981551.5A CN201510981551A CN105509362A CN 105509362 A CN105509362 A CN 105509362A CN 201510981551 A CN201510981551 A CN 201510981551A CN 105509362 A CN105509362 A CN 105509362A
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- heat exchanger
- cross valve
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- treatment system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the invention discloses a multi-connected environment treatment system. The multi-connected environment treatment system aims to solve the problems that in the process of low-temperature or high-turbidity refrigeration and dehumidification process, the environment temperature is lowered, an air-conditioning system easily recycles liquid refrigerants and then a compressor gets burned. The multi-connected environment treatment system comprises a compressor set, a conveying four-way valve set, a recycling four-way valve set, an outdoor heat exchanger set, a refrigerant switching set and an indoor heat exchanger set.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of multiple environmental treatment system.
Background technology
Existing multi-connected air conditioner operationally, its indoor heat exchanger otherwise all do evaporimeter use, or all do condenser use.When low temperature or high turbid refrigerated dehumidification, if indoor set heat exchanger is all used as evaporimeter, environment temperature may be made like this to decline, and evaporimeter can not evaporate completely, thus causes air-conditioning system to be recovered to liquid refrigerants, easily causes compressor to burn.
Summary of the invention
Embodiments provide a kind of multiple environmental treatment system, can solve when low temperature or high turbid refrigerated dehumidification, environment temperature declines, the problem that air-conditioning system is easily recovered to liquid refrigerants and causes compressor to burn.
A kind of multiple environmental treatment system that the embodiment of the present invention provides, comprising: Compressor Group, conveying cross valve group, recovery cross valve group, outdoor heat exchanger unit, refrigerant switch unit and indoor heat exchanger unit;
Described conveying cross valve group is made up of the cross valve of several parallel connections, comprise first end, the second end, the 3rd end and the 4th end, when described conveying cross valve group power down, its first end and the second end conducting, 3rd end and the 4th end conducting, when described conveying cross valve group powers on, its first end and the 3rd end conducting, the second end and the 4th end conducting;
Described recovery cross valve group is made up of the cross valve of several parallel connections, comprise first end, the second end, the 3rd end and the 4th end, when described recovery cross valve group power down, its first end and the second end conducting, 3rd end and the 4th end conducting, when described recovery cross valve group powers on, its first end and the 3rd end conducting, the second end and the 4th end conducting;
Described refrigerant switches unit and is made up of several cooling medium switching devices, comprises liquid pipe output, tracheae output, liquid pipe input, low pressure gas pipe input and high-pressure air pipe input;
The first end of described conveying cross valve group is connected with the output of described Compressor Group, second end is connected with described outdoor heat exchanger unit, the low pressure gas pipe input that the 3rd end is connected the input of described Compressor Group with the common port of the 4th end, described refrigerant switches unit, the second end of described recovery cross valve group and the common port of the 4th end;
The first end of described recovery cross valve group is connected with the output of described Compressor Group, and the high-pressure air pipe input that the 3rd end and described refrigerant switch unit is connected;
The liquid pipe input that described refrigerant switches unit is connected with described outdoor heat exchanger unit, and liquid pipe output is connected with the liquid pipe end of described indoor heat exchanger unit, and tracheae output is connected with the tracheae end of described indoor heat exchanger unit.
Alternatively, the input of described Compressor Group is provided with gas-liquid separator.
Alternatively, described indoor heat exchanger unit is made up of the indoor set of some parallel connections, and each described indoor set is composed in series by some heat exchangers;
Described cooling medium switching device is installed with described indoor set one_to_one corresponding and is connected.
Alternatively, the some cooling medium switching devices in described refrigerant switching unit are in parallel by described liquid pipe input, low pressure gas pipe input and the high-pressure air pipe input on it respectively by branch pipe.
Alternatively, the input of described branch pipe is provided with stop valve.
Alternatively, described outdoor heat exchanger unit comprises the heat exchanger of some parallel connections, and the heat exchanger place branch road of described outdoor heat exchanger unit is also provided with electric expansion valve.
Alternatively, the heat exchanger of described outdoor heat exchanger unit is air cooling heat exchanger, and it is separately installed with blower fan.
Alternatively, the cross valve of described conveying cross valve group and the heat exchanger of described outdoor heat exchanger unit connect one to one.
Alternatively, the output of described Compressor Group is also provided with oil eliminator.
Alternatively, also electric expansion valve is installed between some heat exchangers of described indoor set.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
In embodiments of the present invention, by controlling conveying cross valve group and reclaiming cross valve group, make outdoor heat exchanger unit and indoor heat exchanger unit all can be used as evaporimeter or condenser, avoid when low temperature or high turbid refrigerated dehumidification, environment temperature declines, the situation that air-conditioning system is easily recovered to liquid refrigerants and causes compressor to burn.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of multiple environmental treatment system in the embodiment of the present invention.
Detailed description of the invention
Embodiments provide a kind of multiple environmental treatment system, for solving when low temperature or high turbid refrigerated dehumidification, environment temperature declines, the problem that air-conditioning system is easily recovered to liquid refrigerants and causes compressor to burn.
For making goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, the embodiments described below are only the present invention's part embodiments, and the embodiment of not all.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the embodiment of the present invention, a kind of multiple environmental treatment system embodiment comprises:
Compressor Group, conveying cross valve group, recovery cross valve group, outdoor heat exchanger unit, refrigerant switch unit and indoor heat exchanger unit;
This conveying cross valve group is made up of the cross valve of several parallel connections, comprise first end, the second end, the 3rd end and the 4th end, when this conveying cross valve group power down, its first end and the second end conducting, 3rd end and the 4th end conducting, when this conveying cross valve group powers on, its first end and the 3rd end conducting, the second end and the 4th end conducting;
This recovery cross valve group is made up of the cross valve of several parallel connections, comprise first end, the second end, the 3rd end and the 4th end, when this recovery cross valve group power down, its first end and the second end conducting, 3rd end and the 4th end conducting, when this recovery cross valve group powers on, its first end and the 3rd end conducting, the second end and the 4th end conducting;
This refrigerant switches unit and is made up of several cooling medium switching devices, comprises liquid pipe output, tracheae output, liquid pipe input, low pressure gas pipe input and high-pressure air pipe input;
The first end of this conveying cross valve group is connected with the output of this Compressor Group, second end is connected with this outdoor heat exchanger unit, and the 3rd end is connected the input of this Compressor Group, the common port of the switching of this refrigerant the low pressure gas pipe input of unit, the second end of this recovery cross valve group and the 4th end with the common port of the 4th end;
The first end of this recovery cross valve group is connected with the output of this Compressor Group, and the high-pressure air pipe input that the 3rd end and this refrigerant switch unit is connected;
The liquid pipe input that this refrigerant switches unit is connected with this outdoor heat exchanger unit, and liquid pipe output is connected with the liquid pipe end of this indoor heat exchanger unit, and tracheae output is connected with the tracheae end of this indoor heat exchanger unit.
Preferably, the input of this Compressor Group is provided with gas-liquid separator.
Preferably, this indoor heat exchanger unit is made up of the indoor set of some parallel connections, and this indoor set each is composed in series by some heat exchangers; This cooling medium switching device is installed with this indoor set one_to_one corresponding and is connected.
Preferably, this refrigerant switches some cooling medium switching devices in unit by branch pipe respectively by parallel to this liquid pipe input, low pressure gas pipe input and high-pressure air pipe input on it.
Preferably, the input of this branch pipe is provided with stop valve.
Preferably, this outdoor heat exchanger unit comprises the heat exchanger of some parallel connections, and the heat exchanger place branch road of this outdoor heat exchanger unit is also provided with electric expansion valve.
Preferably, the heat exchanger of this outdoor heat exchanger unit is air cooling heat exchanger, and it is separately installed with blower fan.
Preferably, the cross valve of this conveying cross valve group and the heat exchanger of this outdoor heat exchanger unit connect one to one.
Preferably, the output of this Compressor Group is also provided with oil eliminator.
Preferably, also electric expansion valve is installed between some heat exchangers of this indoor set.
In the present embodiment, conveying cross valve group selects two cross valves, reclaim cross valve group and select a cross valve, outdoor heat exchanger unit selects two typhoon cold heat exchangers, refrigerant switches unit and selects two cooling medium switching devices, and indoor heat exchanger unit selects two indoor sets, and every platform indoor set comprises two heat exchangers, specifically as shown in Figure 1, this multiple environmental treatment system comprises:
A compressor 1 or multiple parallel connection compressor, such as Fig. 1 illustrates two compressors be connected in parallel 1;
First air cooling heat exchanger 2;
First outdoor fan 3, first outdoor fan 3 is for giving the first air cooling heat exchanger 2 enhanced heat exchange;
Second air cooling heat exchanger 4, second air cooling heat exchanger 4 and the first air cooling heat exchanger 2 separate;
Second outdoor fan 5, second outdoor fan 5 and the first outdoor fan 3 separate, the second outdoor fan 5 for give the second air cooling heat exchanger semi-finals heat exchange;
2 or multiple stage indoor set, such as Fig. 1 illustrates two indoor sets: the first indoor set 40, second indoor set 41, the liquid pipe end A of the first indoor set 40 is connected with the liquid pipe output terminals A of indoor-unit cooling-medium switching device shifter 30, the tracheae end B of the first indoor set 40 is connected with the tracheae output B of indoor-unit cooling-medium switching device shifter 30, the liquid pipe end A of the second indoor set 41 is connected with the liquid pipe output terminals A of indoor-unit cooling-medium switching device shifter 31, the tracheae end B of the second indoor set 41 is connected with the tracheae output B of indoor-unit cooling-medium switching device shifter 31
2 or multiple indoor-unit cooling-medium switching device shifters, such as Fig. 1 illustrates two indoor-unit cooling-medium switching device shifters: the first indoor-unit cooling-medium switching device shifter 30, second indoor-unit cooling-medium switching device shifter 31,
The liquid pipe output terminals A of the first indoor-unit cooling-medium switching device shifter 30 follows the liquid pipe end A of indoor set 40 to connect, and the liquid pipe input C of the first indoor-unit cooling-medium switching device shifter 30 is connected by the liquid pipe stop valve 15 of multi-connected machine liquid pipe branch pipe 50 with Three-pipe heat recovery multi-connected off-premises station; The tracheae output B of the first indoor-unit cooling-medium switching device shifter 30 follows the tracheae end B of indoor set 40 to connect; The low pressure gas pipe input D of the first indoor-unit cooling-medium switching device shifter 30 is connected by the low pressure gas pipe stop valve 16 of multi-connected machine low pressure gas pipe branch pipe 51 with Three-pipe heat recovery multi-connected off-premises station; The high-pressure air pipe input E of the first indoor-unit cooling-medium switching device shifter 30 is connected by the high-pressure air pipe stop valve 17 of multi-connected machine high-pressure air pipe branch pipe 52 with Three-pipe heat recovery multi-connected off-premises station; First indoor-unit cooling-medium switching device shifter 30 still heats for freezing for the indoor set 30 controlling its connection;
The liquid pipe output terminals A of the second indoor-unit cooling-medium switching device shifter 31 follows the liquid pipe end A of indoor set 41 to connect, and the liquid pipe input C of the second indoor-unit cooling-medium switching device shifter 31 is connected by the liquid pipe stop valve 15 of multi-connected machine liquid pipe branch pipe 50 with Three-pipe heat recovery multi-connected off-premises station; The tracheae output B of the second indoor-unit cooling-medium switching device shifter 31 follows the tracheae end B of indoor set 40 to connect; The low pressure gas pipe input D of the first indoor-unit cooling-medium switching device shifter 30 is connected by the low pressure gas pipe stop valve 16 of multi-connected machine low pressure gas pipe branch pipe 51 with Three-pipe heat recovery multi-connected off-premises station; The high-pressure air pipe input E of the first indoor-unit cooling-medium switching device shifter 30 is connected by the high-pressure air pipe stop valve 17 of multi-connected machine high-pressure air pipe branch pipe 52 with Three-pipe heat recovery multi-connected off-premises station; First indoor-unit cooling-medium switching device shifter 31 still heats for freezing for the indoor set 41 controlling its connection;
It should be noted that all indoor sets are all forgiven in the middle of two heat exchangers and heat exchanger and connect throttling electric expansion valve (as figure indoor set 40 throttling dehumidifying electric expansion valve 80).
First cross valve 7, the first end D of the first cross valve 7 connects the refrigerant output B of oil eliminator 6, second end C of the first cross valve 7 connects the first air cooling heat exchanger 2,3rd end E of the first cross valve 7 is connected the common port of the entrance point of low pressure gas pipe stop valve 16 and gas-liquid separator 14 with the common port of the 4th end S, the first cross valve 7 uses as condenser for controlling the first air cooling heat exchanger 2 or uses as evaporimeter;
Second cross valve 8, the first end D of the second cross valve 8 connects the refrigerant output B of oil eliminator 6, second end C of the second cross valve 8 connects the second air cooling heat exchanger 4,3rd end E of the second cross valve 8 is connected the common port of the entrance point of low pressure gas pipe stop valve 16 and gas-liquid separator 14 with the common port of the 4th end S, the second cross valve 8 uses as condenser for controlling the second air cooling heat exchanger 4 or uses as evaporimeter;
3rd cross valve 11, the first end D of the 3rd cross valve 11 connects the refrigerant output B of oil eliminator 6,3rd end E of the 3rd cross valve 11 connects high-pressure air pipe stop valve 17, second end C of the 3rd cross valve 11 is connected the common port of the 3rd end E of the first cross valve 7 and the common port of the 4th end S, the 3rd end E of the second cross valve 8 and the 4th end S with the common port of the 4th end S, the 3rd cross valve 11 is for controlling 2 or multiple stage indoor set 40,41 heats;
It should be noted that, cross valve (such as above-mentioned first cross valve 7, second cross valve 8, the 3rd cross valve 11) when power down, first end D and the second end C conducting, the 3rd end E and the 4th end S conducting;
Cross valve when powering on, first end D and the 3rd end E conducting, the second end C and the 4th end S conducting.
Multiple environmental treatment system is specific as follows in the loop control of freezing and heat:
Multiple environmental treatment system is when whole indoor sets all freezes, first cross valve 7 and the second cross valve 8 power down, first electric expansion valve 12 and the second electric expansion valve 13 are opened under the control of electric-control system, 3rd cross valve 11 power down, electric-control system is by the low pressure gas pipe input D of indoor-unit cooling-medium switching device shifter 30,31 and tracheae output B conducting, and high-pressure air pipe input E and tracheae output B closes.Compressor 1 discharge HTHP refrigerant a part after the first cross valve 7 after the first air cooling heat exchanger 2 condensation through the first electric expansion valve 12 reducing pressure by regulating flow, a part after the second cross valve 8 after the second air cooling heat exchanger 4 condensation through the second electric expansion valve 13 reducing pressure by regulating flow, divide after the shunting of liquid pipe branch pipe 50 after liquid refrigerants after two air cooling heat exchanger reducing pressure by regulating flows to liquid pipe stop valve 15 and be clipped to the liquid pipe input C of indoor-unit cooling-medium the switching device shifter 30 and liquid pipe input C of indoor-unit cooling-medium switching device shifter 31, the heat exchanger 401 of the indoor set 40 connected to it through the refrigerant of the liquid pipe input C of indoor-unit cooling-medium switching device shifter 30 again by after electric expansion valve 80 and heat exchanger 402 devaporation heat absorption after the tracheae output B of indoor-unit cooling-medium switching device shifter 30 to low pressure gas pipe input D, after the heat exchanger devaporation heat absorption of the indoor set 41 connected to it through the refrigerant of the liquid pipe input C of indoor-unit cooling-medium switching device shifter 31 after the tracheae output B of indoor-unit cooling-medium switching device shifter 31 to low pressure gas pipe input D, then two strands of refrigerants get back to gas-liquid separator 14 by low pressure gas pipe branch pipe 51 interflow to low pressure gas pipe stop valve 16, finally get back to compressor 1 and complete kind of refrigeration cycle, reach the object of multiple environmental treatment cooling system.
It should be noted that, due to the 3rd cross valve 11 power down, the first end D of the first cross valve 11 and the second end C conducting, the HTHP refrigerant that compressor 1 is discharged is fallen by capillary pipe plug in the first cross valve 11, only flows through a small amount of refrigerant and gets back to gas-liquid separator 14 through capillary.
Multiple environmental treatment system is when whole indoor sets all heats, 3rd cross valve 11 powers on, first electric expansion valve 12, second electric expansion valve 13 is opened under the control of electric-control system, first cross valve 7, second cross valve 8 powers on, the low pressure gas pipe input D of indoor-unit cooling-medium switching device shifter 30,31 and tracheae output B closes by electric-control system, high-pressure air pipe input E and tracheae output B conducting.The refrigerant of the HTHP that compressor 1 the is discharged high-pressure air pipe input E of indoor-unit cooling-medium the switching device shifter 30 and high-pressure air pipe input E of indoor-unit cooling-medium switching device shifter 31 respectively after being shunted by high-pressure air pipe branch pipe 52 after the 3rd cross valve 11 to high-pressure air pipe stop valve 17, the heat exchanger of the indoor set 40 connected to it through the refrigerant of the high-pressure air pipe input E of indoor-unit cooling-medium switching device shifter 30 to go after condensation heat release after the liquid pipe output terminals A of indoor-unit cooling-medium switching device shifter 30 to liquid pipe input C, the heat exchanger of the indoor set 41 connected to it through the refrigerant of the high-pressure air pipe input E of indoor-unit cooling-medium switching device shifter 31 to go after condensation heat release after the liquid pipe output terminals A of indoor-unit cooling-medium switching device shifter 31 to liquid pipe input C, then two strands of refrigerants arrive liquid pipe stop valve 15 by liquid pipe branch pipe 50 interflow, a refrigerant part behind interflow gets back to gas-liquid separator 14 through the first cross valve 7 after the first electric expansion valve 12 reducing pressure by regulating flow after the first air cooling heat exchanger 2 evaporation endothermic, a part gets back to gas-liquid separator 14 through the second cross valve 8 after the second electric expansion valve 13 reducing pressure by regulating flow after the second air cooling heat exchanger 4 evaporation endothermic, finally get back to compressor 1 to complete and heat circulation, reach the object that multiple environmental treatment system heats.
It should be noted that, because the first cross valve 7 powers on, the first end D of the first cross valve 7 and the 3rd end E conducting, the HTHP refrigerant that compressor 1 is got rid of is fallen by capillary pipe plug in the first cross valve 7, only flows through a small amount of refrigerant and gets back to gas-liquid separator 14 through capillary.Because the second cross valve 8 powers on, the first end D of the second cross valve 8 and the 3rd end E conducting, the HTHP refrigerant that compressor 1 is got rid of is fallen by capillary pipe plug in the second cross valve 8, only flows through a small amount of refrigerant and gets back to gas-liquid separator 14 through capillary.
Multiple environmental treatment system disclosed by the invention improve multiple environmental treatment system the reliability of low/high-temperature dehumidification and the detailed process of comfortableness as follows:
Multiple environmental treatment system is when low temperature and high relative humidity dehumidifies, if whole indoor sets all opens refrigeration, air-cooled side environment temperature can reduce, indoor two air cooling heat exchangers are without the need to all making evaporimeter, now, refrigeration can be used for an air cooling heat exchanger 402, an air cooling heat exchanger is used for heating 401, first cross valve 7 power down of multiple environmental treatment system, second cross valve 8 powers on, first electric expansion valve 12 is opened under the control of electric-control system, second electric expansion valve 13 is closed, 3rd cross valve 11 is opened, electric-control system is by indoor-unit cooling-medium switching device shifter 30, the low pressure gas pipe input D of 31 and tracheae output B conducting, high-pressure air pipe input E and tracheae output B closes.Compressor 1 discharge HTHP refrigerant all after the first cross valve 7 after the first air cooling heat exchanger 2 condensation through the first electric expansion valve 12 not reducing pressure by regulating flow, divide after the shunting of liquid side branch pipe 50 after liquid refrigerants to liquid pipe stop valve 15 and be clipped to the liquid pipe input C of indoor-unit cooling-medium the switching device shifter 30 and liquid pipe input C of indoor-unit cooling-medium switching device shifter 31, after the heat exchanger devaporation heat absorption of the indoor set 40 connected to it through the refrigerant of the liquid pipe input C of indoor-unit cooling-medium switching device shifter 30 after the tracheae output B of indoor-unit cooling-medium switching device shifter 30 to low pressure gas pipe input D, after the heat exchanger devaporation heat absorption of the indoor set 41 connected to it through the refrigerant of the liquid pipe input C of indoor-unit cooling-medium switching device shifter 31 after the tracheae output B of indoor-unit cooling-medium switching device shifter 31 to low pressure gas pipe input D, then two strands of refrigerants get back to gas-liquid separator 14 by low pressure gas pipe branch pipe 51 interflow to low pressure gas pipe stop valve 16, finally get back to compressor 1 and complete kind of refrigeration cycle, reach the object of multiple environmental treatment cooling system.Also ensure that the system reliability of freezing at low ambient temperatures simultaneously.
It should be noted that: because the second cross valve 8 powers on, second electric expansion valve 13 is closed, the HTHP refrigerant that compressor 1 is discharged is fallen by capillary pipe plug in the second cross valve 8, the excessively a small amount of refrigerant of refrigeration stream gets back to gas-liquid separator 14 through capillary, and the refrigerant in the second air cooling heat exchanger 4 gets back to gas-liquid separator 14 after the second cross valve 8, be namely equivalent to not circulate in the second air cooling heat exchanger 4 refrigerant.Multiple environmental treatment system opens refrigeration or constant temperature dehumidification at part indoor set, when part indoor set is opened and is heated, such as the first indoor set 40 opens refrigeration, second indoor set 41 is opened and is heated, according to heat balance and the Stress control needs of system, the air cooling heat exchanger part of off-premises station needs to make condenser, part needs to make evaporimeter, such as using the first air cooling heat exchanger 2 as condenser, second air cooling heat exchanger 4 is as evaporimeter, control procedure is as follows: the first cross valve 7 power down of multiple environmental treatment system, second cross valve 8 powers on, first electric expansion valve 12 is opened under the control of electric-control system, second electric expansion valve 13 is opened under the control of electric-control system, 3rd cross valve 11 powers on, electric-control system is by the low pressure gas pipe input D of indoor-unit cooling-medium switching device shifter 30 and tracheae output B conducting, high-pressure air pipe input E and tracheae output B closes.The low pressure gas pipe input D of indoor-unit cooling-medium switching device shifter 31 and tracheae output B is closed, high-pressure air pipe input E and tracheae output B conducting.Compressor 1 discharge HTHP refrigerant a part after the 3rd cross valve 11 to high-pressure air pipe stop valve 17 again after high pressure gas side branch pipe 52 to the high-pressure air pipe input E of the second indoor-unit cooling-medium switching device shifter 31, due to high-pressure air pipe input E and tracheae output B conducting, condensation heat release in refrigerant to indoor set 41, condensed liquid refrigerants arrives liquid pipe input C through the liquid pipe output terminals A of the second indoor-unit cooling-medium switching device shifter 31, then the common port of liquid pipe branch pipe 50 and liquid pipe stop valve 15 and the first electric expansion valve 12 and the second electric expansion valve 13 is arrived, HTHP refrigerant a part of common port reaching liquid pipe stop valve 15 and the first electric expansion valve 12 and the second electric expansion valve 13 and liquid pipe branch pipe 50 after the first cross valve 7 after the first air cooling heat exchanger 2 condensation after the first electric expansion valve 12 in addition that compressor 1 is discharged, the condensed refrigerant of two-way collaborates rear portion after the second electric expansion valve 13 to the second air cooling heat exchanger 4 evaporation endothermic, then gas-liquid separator 14 is finally got back to through the second cross valve 8, a part of condensed refrigerant arrives liquid pipe output terminals A through the liquid pipe input C of the first indoor-unit cooling-medium switching device shifter 30 in addition, then after completing evaporation endothermic in the first indoor set 40, due to liquid pipe output B and the low pressure gas pipe input D conducting of the first indoor-unit cooling-medium switching device shifter 30, refrigerant after evaporation arrives low pressure gas pipe branch pipe 51 through the first indoor-unit cooling-medium switching device shifter 30, then gas-liquid separator 14 is got back to through low pressure gas pipe stop valve 16, refrigerant after final two-way evaporation is all got back to compressor 1 and is completed whole refrigerant circulation.Reach multiple environmental treatment components of system as directed indoor set refrigeration, the object that part indoor set heats.Also ensure that system operation reliability at low ambient temperatures simultaneously.
It should be noted that, in order to the heating effect of the refrigeration and the first indoor set that ensure the first indoor set 40, the balance that the caloric requirement of system is certain, make full use of the recuperation of heat feature of Three-pipe heat recovery multi-connected machine, with minimum compressor input power consumption, by using outdoor air cooling heat exchanger part as condenser, part is as evaporimeter, and the air quantity of the Flow-rate adjustment and the first outdoor fan 3 and the second outdoor fan 5 of passing through the first electric expansion valve 12 and the second electric expansion valve 13 regulates, reach and input with minimum compressor power consumption, ensure that the refrigeration of machine in refrigeration and heat the heating effect of interior machine, both ensure that the comfortableness of user also reached the object of abundant heat recovery energy-saving, outdoor fan simultaneously, electric expansion valve, the adjustment of outdoor air cooling heat exchanger coordinates, the pressure and temperature control of system is in rational scope, also ensure that the reliability of system.
When multiple environmental treatment system hypothermia heats, if whole indoor sets is all opened and is heated, when basic controlling process heats see above-mentioned multiple environmental treatment system, but because air-cooled side environment temperature is low, air cooling heat exchanger meeting frosting, if two air cooling heat exchangers (first air cooling heat exchanger 2 and the second air cooling heat exchanger 4) are defrosted simultaneously, indoor set 40 can be caused, indoor set 41 blows a cold wind over or do not dry, have influence on multiple environmental treatment system like this can not continue to heat, and then affect the comfortableness of user.When air cooling heat exchanger needs defrost, can defrost as condenser by an air cooling heat exchanger, another air cooling heat exchanger as evaporimeter, thus ensures that systems stay heats.Wherein, the air cooling heat exchanger when process of air cooling heat exchanger defrost is shown in that multiple environmental treatment system high temperature heats makees condenser, an air cooling heat exchanger does the process of evaporimeter, when also can be multiple environmental treatment system hypothermia refrigeration, an air cooling heat exchanger makees condenser, an air cooling heat exchanger does the process of evaporimeter, repeats no more herein.
With reference to above various running status, can repeat no more in the ruuning situation of multiple environmental treatment system under other environment temperatures and indoor set open refrigeration or heating mode herein.
In summary it can be seen, the present invention is by replacing an original air cooling heat exchanger by two, indoor air cooling heat exchanger, except multi-connected machine there is refrigeration, to heat and freeze+heat-production functions except, also add low temperature high temperature constant temperature dehumidification function, thus ensure that the comfort level of user.Therefore, multiple environmental treatment system provided by the invention effectively improves the integrity problem of multiple environmental treatment system when cryogenic refrigeration dehumidifying, high temperature cool-down dehumidification and improves the indoor comfort of user.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the INDIRECT COUPLING of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple NE.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only storage (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a multiple environmental treatment system, is characterized in that, comprising: Compressor Group, conveying cross valve group, recovery cross valve group, outdoor heat exchanger unit, refrigerant switch unit and indoor heat exchanger unit;
Described conveying cross valve group is made up of the cross valve of several parallel connections, comprise first end, the second end, the 3rd end and the 4th end, when described conveying cross valve group power down, its first end and the second end conducting, 3rd end and the 4th end conducting, when described conveying cross valve group powers on, its first end and the 3rd end conducting, the second end and the 4th end conducting;
Described recovery cross valve group is made up of the cross valve of several parallel connections, comprise first end, the second end, the 3rd end and the 4th end, when described recovery cross valve group power down, its first end and the second end conducting, 3rd end and the 4th end conducting, when described recovery cross valve group powers on, its first end and the 3rd end conducting, the second end and the 4th end conducting;
Described refrigerant switches unit and is made up of several cooling medium switching devices, comprises liquid pipe output, tracheae output, liquid pipe input, low pressure gas pipe input and high-pressure air pipe input;
The first end of described conveying cross valve group is connected with the output of described Compressor Group, second end is connected with described outdoor heat exchanger unit, the low pressure gas pipe input that the 3rd end is connected the input of described Compressor Group with the common port of the 4th end, described refrigerant switches unit, the second end of described recovery cross valve group and the common port of the 4th end;
The first end of described recovery cross valve group is connected with the output of described Compressor Group, and the high-pressure air pipe input that the 3rd end and described refrigerant switch unit is connected;
The liquid pipe input that described refrigerant switches unit is connected with described outdoor heat exchanger unit, and liquid pipe output is connected with the liquid pipe end of described indoor heat exchanger unit, and tracheae output is connected with the tracheae end of described indoor heat exchanger unit.
2. multiple environmental treatment system according to claim 1, it is characterized in that, the input of described Compressor Group is provided with gas-liquid separator.
3. multiple environmental treatment system according to claim 1, is characterized in that, described indoor heat exchanger unit is made up of the indoor set of some parallel connections, and each described indoor set is composed in series by some heat exchangers;
Described cooling medium switching device is installed with described indoor set one_to_one corresponding and is connected.
4. multiple environmental treatment system according to claim 1, it is characterized in that, some cooling medium switching devices that described refrigerant switches in unit are in parallel by described liquid pipe input, low pressure gas pipe input and the high-pressure air pipe input on it respectively by branch pipe.
5. multiple environmental treatment system according to claim 4, it is characterized in that, the input of described branch pipe is provided with stop valve.
6. multiple environmental treatment system according to claim 1, it is characterized in that, described outdoor heat exchanger unit comprises the heat exchanger of some parallel connections, and the heat exchanger place branch road of described outdoor heat exchanger unit is also provided with electric expansion valve.
7. multiple environmental treatment system according to claim 6, is characterized in that, the heat exchanger of described outdoor heat exchanger unit is air cooling heat exchanger, and it is separately installed with blower fan.
8. multiple environmental treatment system according to claim 1, is characterized in that, the cross valve of described conveying cross valve group and the heat exchanger of described outdoor heat exchanger unit connect one to one.
9. multiple environmental treatment system according to any one of claim 1 to 8, it is characterized in that, the output of described Compressor Group is also provided with oil eliminator.
10. multiple environmental treatment system according to claim 3, is characterized in that, is also provided with electric expansion valve between some heat exchangers of described indoor set.
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| CN112797675A (en) * | 2019-10-28 | 2021-05-14 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
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| EP4130597A4 (en) * | 2020-09-22 | 2023-11-08 | GD Midea Heating & Ventilating Equipment Co., Ltd. | Air conditioner, control method and computer-readable storage medium |
| CN113483395A (en) * | 2021-05-26 | 2021-10-08 | 广州丹特怡家科技有限公司 | Low-energy-consumption residential environment control all-in-one machine and control method thereof |
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