CN105605818A - Double-working-condition air conditioner - Google Patents
Double-working-condition air conditioner Download PDFInfo
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- CN105605818A CN105605818A CN201510910152.XA CN201510910152A CN105605818A CN 105605818 A CN105605818 A CN 105605818A CN 201510910152 A CN201510910152 A CN 201510910152A CN 105605818 A CN105605818 A CN 105605818A
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- 239000007788 liquid Substances 0.000 claims description 65
- 238000004378 air conditioning Methods 0.000 claims description 63
- 230000002457 bidirectional effect Effects 0.000 claims description 22
- 238000000926 separation method Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000009183 running Effects 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 description 30
- 238000001816 cooling Methods 0.000 description 27
- 239000003507 refrigerant Substances 0.000 description 26
- 238000005057 refrigeration Methods 0.000 description 23
- 238000001704 evaporation Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 230000005494 condensation Effects 0.000 description 12
- 238000009833 condensation Methods 0.000 description 12
- 230000001105 regulatory effect Effects 0.000 description 12
- 230000005855 radiation Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 210000000621 bronchi Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 210000004055 fourth ventricle Anatomy 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a double-working-condition air conditioner. The double-working-condition air conditioner is characterized in that two indoor heat exchange units which independently run are arranged on the indoor side, two compressor units are arranged on an outdoor unit, each compressor unit is composed of at least one compressor and a four-way valve communicated with the compressor, the two compressor units are converged and connected to an outdoor heat exchanger, the outdoor heat exchanger is communicated with the two indoor heat exchange units through pipelines in parallel, the other end of each indoor heat exchange unit is connected to the corresponding compressor unit, and in this way, each compressor unit and the corresponding indoor heat exchange unit form a closed communication loop and the two communication loops share the outdoor heat exchanger. The two compressors can independently run and correspond to the indoor heat exchange units respectively so that the requirement for the different running working conditions of the two units can be met, and the two compressors can run in parallel and correspond to a certain indoor heat exchange unit so that the requirement for the independent high load of the unit can be met. The two indoor heat exchange units can run in an independent or combined mode according to actual requirements in a framework of an air conditioner system.
Description
Technical field
The present invention relates to the technical field of air-conditioning, specifically a kind of Double-working-condition air-conditioning.
Background technology
Now, family and all kinds of commercialization and office generally use air-conditioning, have brought nice and cool and warm to users. Along with the progressively raising of people's living standard, the usage quantity to air-conditioning and requirement are also progressively improving.
Need to use the occasion of many indoor apparatus of air conditioner for many rooms, mainly contain at present following several solution: the one, the common air-conditioning form of one-to-one, it is an off-premises station of each indoor set coupling, the advantage of this mode is that each air-conditioning system is independent separately, do not interfere with each other, can realize respectively independently regulation and control, shortcoming is off-premises station One's name is legion, often there is having overworked on exterior wall the phenomenon of air-conditioner outdoor unit, and much occasions cannot be arranged so many off-premises stations, present domestic air conditioning belongs to this situation substantially; The 2nd, adopt wind system, the unified air of processing of air conditioning terminal unit is delivered to the air outlet that is arranged in each room; The 3rd, adopt water system, multiple indoor fan coil pipes share a water system; The 4th, adopt VRF Air Conditioning System, multiple indoor sets share a freon refrigerant system. Rear three kinds of modes all belong to the category of central air-conditioning, disperse mixed and disorderly problem although solved numerous air-conditioning systems, but all having a common shortcoming is exactly all can only apply a system conditions point to the air-treatment in each room, cannot be for the concrete condition in each room evaporating temperature or the condensation temperature of regulating system cold-producing medium targetedly, in actual motion, interact with regard to the ruuning situation that there will be each room, the more difficult adjusting of accomplishing accuracy, and be unfavorable for saving the energy.
Along with the development of air-conditioning technical, exist the indoor apparatus of air conditioner group of existing employing cold-producing medium heat exchange in an air-conditioning environment for use, there is again the air conditioning terminal that adopts water heat exchange, as adopted the situation of floor or the heating of ceiling radiation cooling and indoor apparatus of air conditioner sets in parallel operation. Because the required evaporating temperature of radiation cooling is higher, and common air-conditioning indoor units evaporating temperature is lower, therefore need to adopt respectively two different air-conditioning systems to move, cause investment of equipment larger, and between two cover air-conditioning systems, more difficult accomplishing unifies to coordinate to control, and is unfavorable for saving the energy. If only adopt a set of air-conditioning system to supply radiation cooling and common air-conditioning simultaneously, will cause cold-producing medium operating condition and the common air-conditioning of air-conditioning system to be consistent, cause energy efficiency to reduce.
Also have some other similar air-conditioning service condition, do not enumerate. On market, need a kind ofly time can realize simultaneously and move two kinds of different evaporating temperatures in refrigeration, in the time heating, can realize simultaneously and move the air-conditioning system of two kinds of different condensation temperatures, to meet many indoor sets or the different demands of heat exchange end to evaporating temperature or condensation temperature in same air-conditioning system, realize and save air-conditioning system initial cost, and improve the object of efficiency.
Summary of the invention
The object of the present invention is to provide a kind of improved Double-working-condition air-conditioning, it can overcome many indoor sets or the different demands of heat exchange end to evaporating temperature or condensation temperature that in prior art, cannot effectively meet in same air-conditioning system.
To achieve these goals, technical scheme of the present invention is: a kind of Double-working-condition air-conditioning, it mainly comprises two indoor heat exchange units and the off-premises station being connected with indoor heat exchange unit, it is characterized in that: described indoor heat exchange unit is made up of at least one indoor set, the indoor electronic expansion valve that indoor set mainly comprises indoor heat exchanger and is in series with indoor heat exchanger, distinguish two indoor heat exchange units according to being two refrigerant state differences that indoor heat exchange unit is required;
Described off-premises station is provided with two compressor units, the cross valve that each compressor unit is connected by least one compressor and with compressor forms, two compressor units converge and are connected to outdoor heat exchanger, outdoor heat exchanger is communicated to two indoor heat exchange units by pipeline parallel connection, and two indoor heat exchange unit other ends are connected to respectively corresponding compressor unit separately; Like this, two compressor units and two indoor heat exchange units form respectively the connected loop of two sealings, and these two connected loops share outdoor heat exchanger.
Further, described compressor unit is in series by a gas-liquid separator, a compressor, an oil eliminator, a compressor check valve and a cross valve; Cross valve in two compressor units is connected by a two-way control module separately and between the pipeline that is connected of indoor heat exchange unit.
Described compressor unit also can be in series by a gas-liquid separator, compressor bank, an oil eliminator, a compressor check valve and a cross valve; Described compressor bank is formed in parallel by least two compressors, and the cross valve in two compressor units is connected by a two-way control module separately and between the pipeline that is connected of indoor heat exchange unit.
Further, described two-way control module is bidirectional control valve; Or adopt two groups of unidirectional control modules to be formed in parallel, every group of unidirectional control module is in series by a Unidirectional solenoid valve and a check valve.
When use, each compressor unit of the present invention can be distinguished a corresponding indoor heat exchange unit by independent operating, to meet the different operating condition demands of indoor heat exchange unit, also can two the simultaneously corresponding indoor heat exchange units of compressor unit parallel runnings, to meet the independently high load capacity demand of this indoor heat exchange unit. Realize each indoor heat exchange unit in the framework of an air-conditioning system according to actual demand partable. While making air conditioner refrigerating operation, can provide two kinds of different evaporating temperatures, in the time that moving, air-conditioning heating can provide two kinds of different condensation temperatures, to meet many indoor sets or the different demands of heat exchange end to evaporating temperature or condensation temperature in same air-conditioning system. Realize and save air-conditioning system initial cost, and improve the object of efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of further embodiment of this invention.
Fig. 3 is the structural representation that two indoor heat exchange units of the present invention are chilled water system.
Fig. 4 is the structural representation that two indoor heat exchange units of the present invention are quenching system.
Fig. 5 is the use view that the present invention has a kind of two-way control module.
Fig. 6 is the structural representation of many indoor heat exchanger parallel connections of the present invention.
Fig. 7 is the structural representation of multiple compressors parallel connection of the present invention.
Fig. 8 is the structural representation of indoor set of the present invention.
Fig. 9 is the structural representation of evaporimeter in Fig. 8.
Figure 10 is the another structural representation of indoor set of the present invention.
Figure 11 is the schematic diagram that the present invention adopts two temperature indoor apparatus of air conditioner of another kind of indoor heat exchanger shunting mode to be connected with Double-working-condition air-conditioner outdoor unit.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Label in each accompanying drawing is expressed as follows:
Expansion valve in heat exchanger, 108 fourth ventricles in 101 first indoor heat exchangers, 102 second indoor heat exchangers, 103 first indoor expansion valves, 104 second indoor expansion valves, 105 the 3rd indoor heat exchangers, 106 the 3rd indoor expansion valves, 107 fourth ventricles;
1101 indoor heat exchangers, 1102 main liquid tubes, 1103 blower fans, 1104 liquid pipe connections, 1105 first separating tubes, 1106 second separating tubes, 1107 first electric expansion valves, 1108 second electric expansion valves, 1109 first liquid pipes, 1110 second liquid pipes, 1111 the 3rd liquid pipes, 1112 the 4th liquid pipes, 1113 first gas-distributing pipes, 1114 second gas-distributing pipes, 1115 first gas-tpe fittings, 1116 second gas-tpe fittings, 1117 first bronchuses, 1118 second bronchuses, 1119 the 3rd bronchuses, 1120 the 4th bronchuses, 1131 heat exchanger tubes, 1132 bend pipes, 1133 finned heat exchangers,
2 compressor units
201 first compressors, 202 first cross valves, 203 first compressor check valves, 204 first oil eliminators, 205 first gas-liquid separators, 206 second compressors, 207 second cross valves, 208 second compressor check valves, 209 second oil eliminators, 210 second gas-liquid separators, 211 bidirectional electromagnetic valves, 212 unidirectional control modules, 213 the 3rd compressors, 214 the 3rd oil eliminators, 215 the 3rd compressor check valves, 216 the 4th compressors, 217 the 4th oil eliminators, 218 the 4th compressor check valves,
3 outdoor heat exchangers
301 outdoor fans, 302 outdoor electric expansion valves, 303 outdoor check valves, 304 reservoirs, 305 liquid tube valves, 306 first tracheae valves, 307 second tracheae valves.
A kind of Double-working-condition air-conditioning of the present invention, it mainly comprises two indoor heat exchange units and the off-premises station being connected with indoor heat exchange unit, its difference with the prior art is: described indoor heat exchange unit is made up of at least one indoor set, the indoor electronic expansion valve that indoor set mainly comprises indoor heat exchanger and is in series with indoor heat exchanger, distinguish two indoor heat exchange units according to being two refrigerant condition differences that indoor heat exchange unit is required;
Described off-premises station is provided with two compressor units, the cross valve that each compressor unit is connected by least one compressor and with compressor forms, two compressor units converge and are connected to outdoor heat exchanger, outdoor heat exchanger is communicated to two indoor heat exchange units by pipeline parallel connection, and two indoor heat exchange unit other ends are connected to respectively corresponding compressor unit separately; Like this, two compressor units and two indoor heat exchange units form respectively the connected loop of two sealings, and these two connected loops share outdoor heat exchanger.
Preferably, described compressor unit is in series by a gas-liquid separator, a compressor, an oil eliminator, a compressor check valve and a cross valve; Cross valve in two compressor units is connected by a two-way control module separately and between the pipeline that is connected of indoor heat exchange unit.
Another kind of mode, described compressor unit is in series by a gas-liquid separator, compressor bank, an oil eliminator, a compressor check valve and a cross valve; Described compressor bank is formed in parallel by least two compressors, and the cross valve in two compressor units is connected by a two-way control module separately and between the pipeline that is connected of indoor heat exchange unit.
Two-way control module described in above-mentioned two kinds of modes is bidirectional control valve; Or adopt two groups of unidirectional control modules to be formed in parallel, every group of unidirectional control module is in series by a Unidirectional solenoid valve and a check valve.
Further, between described outdoor heat exchanger and indoor heat exchange unit, be in series with an outdoor electric expansion valve, a reservoir and a liquid tube valve; Between indoor heat exchange unit and compressor unit, be in series with a tracheae valve. On described outdoor electric expansion valve, be parallel with an outdoor check valve, a side of outdoor heat exchanger is provided with corresponding with it outdoor fan.
Further again, two described indoor heat exchange units can be incorporated in an indoor heat exchanger and realize, in indoor heat exchanger, be provided with at least two group heat exchange branch roads, one end of indoor heat exchanger is provided with main liquid tube, between main liquid tube and indoor heat exchanger, being divided into structure by cold-producing medium is connected with the entrance point of heat exchange branch road, the other end of indoor heat exchanger is provided with the separate pipeline corresponding with cold-producing medium liquid separation structure, separates pipeline and is connected with the port of export of heat exchange branch road respectively; Described cold-producing medium liquid separation structure is provided with throttling arrangement.
Described cold-producing medium is divided into structure and is formed in parallel by 2 separating tubes, is respectively equipped with a throttling arrangement on every separating tube, and described throttling arrangement adopts throttling electric expansion valve; The described pipeline that separates is made up of 2 gas-distributing pipes, is respectively equipped with a gas-tpe fitting on every gas-distributing pipe.
Every separating tube is connected with a corresponding liquid pipe respectively, and a corresponding liquid pipe quantity is more than or equal to 1, and each liquid pipe is connected with the entrance point of heat exchange branch road respectively; Every gas-distributing pipe is connected with corresponding point gas branch pipe respectively, and each point of gas branch pipe is connected with the port of export of heat exchange branch road respectively.
In concrete enforcement, as Fig. 1, a kind of Double-working-condition air-conditioning system, comprises outdoor machine part, the first indoor heat exchange unit, the second indoor heat exchange unit. Wherein outdoor machine part comprises two compressors, two cross valves, outdoor heat exchanger, outdoor electric expansion valve and bidirectional electromagnetic valves. The indoor electronic expansion valve that the first indoor heat exchange unit comprises at least one indoor heat exchanger and equates with indoor heat exchanger quantity; The indoor electronic expansion valve that the second indoor heat exchange unit comprises at least one indoor heat exchanger and equates with indoor heat exchanger quantity. Distinguish the first indoor heat exchange unit and the second indoor heat exchange unit according to being that the required refrigerant state in two unit is different.
Described compressor, cross valve, outdoor heat exchanger, outdoor electric expansion valve and indoor heat exchange unit are in turn connected to form refrigerating circuit. Described bidirectional electromagnetic valve connects the E pipe of two cross valves.
Further, as shown in Figure 2, outdoor machine part can increase the parts such as oil eliminator, reservoir, gas-liquid separator, check valve, to improve the operational reliability of air-conditioning system and compressor.
Its key point is that two compressors can be distinguished corresponding the first indoor heat exchange unit and the second indoor heat exchange unit by independent operating, to meet the different operating condition demands of these two unit, also can two compressor parallel operations answer indoor heat exchange unit or the second indoor heat exchange unit to first, to meet the independently high load capacity demand of these two unit simultaneously. Realize the first indoor heat exchange unit and the second indoor heat exchange unit in the framework of an air-conditioning system according to actual demand partable.
Embodiment mono-: floor radiant cooling is for warm indoor apparatus of air conditioner parallel running system, as shown in Figure 2.
Current floor heating technology is universal gradually, and its comfortableness is also generally approved. But floor, ceiling and metope radiation cooling technology are not also popularized, main cause is that radiation cooling exists the situation such as cold deficiency, the easy condensation of radiating surface. Adopt the present invention can realize radiation cooling and indoor apparatus of air conditioner parallel running, it is main having brought into play floor, ceiling and metope cooling employing radiation cooling, indoor do not have blowing feeling, an advantage that comfort level is high, can effectively make up again the problem of cold deficiency and the easy condensation of radiating surface, so that can utilize floor, ceiling, metope etc. to carry out cold and heat supply in winter and summer, increase the level of comfort in room simultaneously. Describe as an example of floor cooling example below.
Object is to realize the room floor cooling heating breeze air conditioner system of height practicality, and in the time of refrigeration, floor cooling heating system is responsible for the sensible heat load in room, and indoor apparatus of air conditioner is responsible for indoor latent heat load and part sensible heat load. Because indoor apparatus of air conditioner is mainly responsible for dehumidifying, evaporating temperature can design lowlyer, and the half that its air circulation and wind speed can be down to general room machine is even lower below, makes human body almost experience the impact less than air-conditioner wind, and indoor comfortableness is greatly improved. While, because the evaporating temperature of the floor cold supply system of responsible indoor main refrigeration duty is higher, can be realized more efficient refrigerating operaton, has improved significantly the efficiency of whole system, realizes energy-saving and cost-reducing target.
As shown in Figure 2, taking the first indoor heat exchange unit as floor cooling heating system, the second indoor heat exchange unit illustrates as indoor air conditioner as example.
Refrigerating operaton can be realized single compressor indoor set refrigeration, double-compressor indoor set refrigeration, single compressor floor cooling, double-compressor floor cooling, double-compressor indoor set and five kinds of operational modes of floor air conditioning; Heating operation can realize that single compressor indoor set heats, double-compressor indoor set heats, single compressor floor heating, double-compressor floor heating, double-compressor indoor set and five kinds of operational modes of floor united heat.
1, single compressor indoor set refrigeration mode. Air conditioner is in the time of refrigerating operaton, and the first compressor cuts out, and the second compressor is opened, and outdoor fan is opened, the first cross valve is closed, and the second cross valve is closed, and outdoor electric expansion valve is closed, bidirectional electromagnetic valve is closed, and the first indoor electronic expansion valve cuts out, and the second indoor electronic expansion valve is opened.
The second compressor compresses low pressure refrigerant vapor, enter outdoor heat exchanger through blast pipe and the second cross valve and be condensed into refrigerant liquid, flow into the second indoor heat exchange unit through outdoor check valve again, cold-producing medium is through the second indoor electronic expansion valve reducing pressure by regulating flow, in the second indoor heat exchange unit, heat absorption flashes to low-pressure gas, flow back to the second compressor through the second cross valve, the second gas-liquid separator, muffler again, complete kind of refrigeration cycle.
2, double-compressor indoor set refrigeration mode. Air conditioner is in the time of refrigerating operaton, and the first compressor is opened, and the second compressor is opened, and outdoor fan is opened, the first cross valve is closed, and the second cross valve is closed, and outdoor electric expansion valve is closed, bidirectional electromagnetic valve is opened, and the first indoor electronic expansion valve cuts out, and the second indoor electronic expansion valve is opened.
The first compressor and the second compressor compress low pressure refrigerant vapor, respectively through the first cross valve and the second cross valve converge laggard enter outdoor heat exchanger be condensed into refrigerant liquid, flow into the second indoor heat exchange unit through outdoor check valve again, cold-producing medium is through the second indoor electronic expansion valve reducing pressure by regulating flow, in the second indoor heat exchange unit, heat absorption flashes to low-pressure gas, one road cold-producing medium is through the second cross valve, the second gas-liquid separator, muffler flows back to the second compressor, another road cold-producing medium is through bidirectional electromagnetic valve, again through the first cross valve, the first gas-liquid separator, muffler flows back to the first compressor, complete kind of refrigeration cycle.
3, single compressor floor cooling pattern. Air conditioner is in the time of refrigerating operaton, and the first compressor is opened, and the second compressor cuts out, and outdoor fan is opened, the first cross valve is closed, and the second cross valve is closed, and outdoor electric expansion valve is closed, bidirectional electromagnetic valve is closed, and the first indoor electronic expansion valve is opened, and the second indoor electronic expansion valve cuts out.
The first compressor compresses low pressure refrigerant vapor, enter outdoor heat exchanger through blast pipe and the first cross valve and be condensed into refrigerant liquid, flow into the first indoor heat exchange unit through outdoor check valve again, cold-producing medium is through the first indoor electronic expansion valve reducing pressure by regulating flow, in the first indoor heat exchange unit, heat absorption flashes to low-pressure gas, flow back to the first compressor through the first cross valve, the first gas-liquid separator, muffler again, complete kind of refrigeration cycle.
4, double-compressor floor cooling pattern. Air conditioner is in the time of refrigerating operaton, and the first compressor is opened, and the second compressor is opened, and outdoor fan is opened, the first cross valve is closed, and the second cross valve is closed, and outdoor electric expansion valve is closed, bidirectional electromagnetic valve is opened, and the first indoor electronic expansion valve is opened, and the second indoor electronic expansion valve cuts out.
The first compressor and the second compressor compress low pressure refrigerant vapor, respectively through the first cross valve and the second cross valve converge laggard enter outdoor heat exchanger be condensed into refrigerant liquid, flow into the first indoor heat exchange unit through outdoor check valve again, cold-producing medium is through the first indoor electronic expansion valve reducing pressure by regulating flow, in the first indoor heat exchange unit, heat absorption flashes to low-pressure gas, one road cold-producing medium is through the first cross valve, the first gas-liquid separator, muffler flows back to the first compressor, another road cold-producing medium is through bidirectional electromagnetic valve, again through the second cross valve, the second gas-liquid separator, muffler flows back to the second compressor, complete kind of refrigeration cycle.
5, double-compressor indoor set and floor air conditioning pattern. Air conditioner is in the time of refrigerating operaton, and the first compressor is opened, and the second compressor is opened, and outdoor fan is opened, the first cross valve is closed, and the second cross valve is closed, and outdoor electric expansion valve is closed, bidirectional electromagnetic valve is closed, and the first indoor electronic expansion valve is opened, and the second indoor electronic expansion valve is opened.
The first compressor and the second compressor compress low pressure refrigerant vapor, respectively through the first cross valve and the second cross valve converge laggard enter outdoor heat exchanger be condensed into refrigerant liquid, flow into the first indoor heat exchange unit and the second indoor heat exchange unit through outdoor check valve again, cold-producing medium is respectively through the first indoor electronic expansion valve and the second indoor electronic expansion valve reducing pressure by regulating flow, the first indoor heat exchange unit with in the second indoor heat exchange unit respectively heat absorption flash to the low-pressure gas that two-way evaporating temperature is different, cooling one road cold-producing medium in floor is through the first cross valve, the first gas-liquid separator, muffler flows back to the first compressor, the cold-producing medium of another road process indoor apparatus of air conditioner is through the second cross valve, the second gas-liquid separator, muffler flows back to the second compressor, complete kind of refrigeration cycle.
In double-compressor indoor set and floor air conditioning pattern, cooling one road cold-producing medium evaporating temperature in floor is higher, and is responsible for indoor main refrigeration duty, and the common refrigeration of Energy Efficiency Ratio is greatly improved. Indoor apparatus of air conditioner one road cold-producing medium evaporating temperature is lower, and wind speed is lower, realizes indoor brute force and dehumidifies and part refrigerating capacity is provided, and ensures indoor humidity within OK range and meets indoor refrigeration duty demand. Whole kind of refrigeration cycle realizes the refrigerating operaton of high energy efficiency and the indoor a home from home of the calm sense of human body is provided.
6, single compressor indoor set heating mode. Air conditioner is in the time of heating operation, and the first compressor cuts out, and the second compressor is opened, and outdoor fan is opened, the first cross valve is opened, and the second cross valve is opened, and outdoor electric expansion valve is opened, bidirectional electromagnetic valve is closed, and the first indoor electronic expansion valve cuts out, and the second indoor electronic expansion valve is opened.
The second compressor compresses low pressure refrigerant vapor, flow into the second indoor heat exchange unit through blast pipe and the second cross valve and be condensed into liquid, cold-producing medium is through the second indoor electronic expansion valve reducing pressure by regulating flow, pass through again outdoor electric expansion valve, in outdoor heat exchanger, be evaporated to low-pressure gas, flow back to the second compressor through the second cross valve, the second gas-liquid separator, muffler again, complete and heat circulation.
7, double-compressor indoor set heating mode. Air conditioner is in the time of heating operation, and the first compressor is opened, and the second compressor is opened, and outdoor fan is opened, the first cross valve is opened, and the second cross valve is opened, and outdoor electric expansion valve is opened, bidirectional electromagnetic valve is opened, and the first indoor electronic expansion valve is crack, and the second indoor electronic expansion valve is opened.
The first compressor and the second compressor compress low pressure refrigerant vapor, the first compressor is discharged Yi road cold-producing medium through the first cross valve and bidirectional electromagnetic valve, the second compressor is discharged Yi road cold-producing medium through the second cross valve, two-way cold-producing medium converges the indoor heat exchange unit of rear inflow second and is condensed into liquid, cold-producing medium is through the second indoor electronic expansion valve reducing pressure by regulating flow, pass through again outdoor electric expansion valve, in outdoor heat exchanger, be evaporated to low-pressure gas, be divided into again two-way, one road cold-producing medium is through the second cross valve, the second gas-liquid separator, muffler flows back to the second compressor, another road cold-producing medium is through through the first cross valve, the first gas-liquid separator, muffler 1 flows back to the first compressor, complete and heat circulation.
8, single compressor floor heating pattern. Air conditioner is in the time of heating operation, and the first compressor is opened, and the second compressor cuts out, and outdoor fan is opened, the first cross valve is opened, and the second cross valve is opened, and outdoor electric expansion valve is opened, bidirectional electromagnetic valve is closed, and the first indoor electronic expansion valve is opened, and the second indoor electronic expansion valve cuts out.
The first compressor compresses low pressure refrigerant vapor, flow into the first indoor heat exchange unit through blast pipe and the first cross valve and be condensed into liquid, cold-producing medium is through the first indoor electronic expansion valve reducing pressure by regulating flow, pass through again outdoor electric expansion valve, in outdoor heat exchanger, be evaporated to low-pressure gas, flow back to the first compressor through the first cross valve, the first gas-liquid separator, muffler again, complete and heat circulation.
9, double-compressor floor heating pattern. Air conditioner is in the time of heating operation, and the first compressor is opened, and the second compressor is opened, and outdoor fan is opened, the first cross valve is opened, and the second cross valve is opened, and outdoor electric expansion valve is opened, bidirectional electromagnetic valve is opened, and the first indoor electronic expansion valve is opened, and the second indoor electronic expansion valve is crack.
The first compressor and the second compressor compress low pressure refrigerant vapor, the first compressor is discharged Yi road cold-producing medium through the first cross valve, the second compressor is discharged Yi road cold-producing medium through the second cross valve and bidirectional electromagnetic valve, two-way cold-producing medium converges the indoor heat exchange unit of rear inflow first and is condensed into liquid, cold-producing medium is through the first indoor electronic expansion valve reducing pressure by regulating flow, pass through again outdoor electric expansion valve, in outdoor heat exchanger, be evaporated to low-pressure gas, be divided into again two-way, one road cold-producing medium is through the first cross valve, the first gas-liquid separator, muffler flows back to the first compressor, another road cold-producing medium is through the second cross valve, the second gas-liquid separator, muffler flows back to the second compressor, complete and heat circulation.
10, double-compressor indoor set and floor united heat pattern. Air conditioner is in the time of heating operation, and the first compressor is opened, and the second compressor is opened, and outdoor fan is opened, the first cross valve is opened, and the second cross valve is opened, and outdoor electric expansion valve is opened, bidirectional electromagnetic valve is closed, and the first indoor electronic expansion valve is opened, and the second indoor electronic expansion valve is opened.
The first compressor and the second compressor are by the compression of low pressure refrigerant vapor, and the first compressor discharge Yi road cold-producing medium flows into the first indoor heat exchange unit through the first cross valve, the first tracheae valve and is condensed into liquid, then through the first indoor electronic expansion valve reducing pressure by regulating flow. The second compressor discharge Yi road cold-producing medium flows into the second indoor heat exchange unit through the second cross valve, the second tracheae valve and is condensed into liquid, again through the second indoor electronic expansion valve reducing pressure by regulating flow, after two-way cold-producing medium converges through outdoor electric expansion valve, in outdoor heat exchanger, flash to low-pressure gas, be divided into again two-way, one road cold-producing medium flows back to the first compressor through the first cross valve, the first gas-liquid separator, muffler, another road cold-producing medium, through flowing back to the second compressor through the second cross valve, the second gas-liquid separator, muffler, completes and heats circulation.
In double-compressor indoor set and floor united heat pattern, floor heating one tunnel condensation of refrigerant temperature is lower, and is responsible for indoor main thermic load, and common the heating of Energy Efficiency Ratio is greatly improved. Indoor apparatus of air conditioner one tunnel condensation of refrigerant temperature is higher, and wind speed is lower, and part heating capacity can be provided, and meets Indoor Thermal load. The whole indoor a home from home that circulates and realize the heating operation of high energy efficiency and the calm sense of human body is provided that heats.
System diagram shown in Fig. 5 is a variation pattern of the system diagram shown in Fig. 2, and its difference is to adopt the parallel-connection structure of two Unidirectional solenoid valves and two check valves to replace a bidirectional electromagnetic valve. In actual design of air conditioning, can also use alternate manner to realize the function of a bidirectional electromagnetic valve, as long as the entire system method of operation and the present invention are consistent, just belong to protection scope of the present invention.
Embodiment bis-: ceiling cooling is for warm air-conditioner water system end parallel running system, as shown in Figure 3.
Be similar to the floor cooling described in embodiment mono-for warm indoor apparatus of air conditioner parallel running system, in embodiment bis-, the indoor apparatus of air conditioner that adopts cold-producing medium heat exchange is replaced with to the air-conditioner water system end that adopts recirculated water heat exchange, can realize room ceiling cooling heating breeze air conditioner system. In the time of refrigeration, ceiling cooling heating system is responsible for the sensible heat load in room, and air-conditioner water system end is responsible for indoor latent heat load and part sensible heat load. Because air-conditioner water system end is mainly responsible for dehumidifying, circulating water temperature can design lowlyer, the half that the air circulation of its end and wind speed can be down to common air-conditioning end is even lower below, makes human body almost experience the impact less than air-conditioner wind, and indoor comfortableness is greatly improved. While, because the circulating water temperature of the ceiling cold supply system of responsible indoor main refrigeration duty is higher, can be realized more efficient refrigerating operaton, has improved significantly the efficiency of whole system, realizes energy-saving and cost-reducing target.
As shown in Figure 3, the first indoor heat exchange unit provides recirculated water for ceiling cooling heating system provides recirculated water, the second indoor heat exchange unit for air-conditioner water system end, and the concrete method of operation is referring to embodiment mono-.
Embodiment tri-: adopt the humiture independence control air conditioner system of two finned heat exchangers that separate, as shown in Figure 4.
Humiture is independently controlled air-conditioning indoor sensible heat load and latent heat load is separately processed, can realize higher system energy efficiency, for a lot of air-conditioning application occasions, can adopt two heat exchanger parallel runnings to realize the object that humiture is independently controlled, one of them heat exchanger adopts compared with high evaporation temperature, is mainly responsible for indoor sensible heat load; Another heat exchanger adopts lower evaporating temperature, mainly load indoor latent heat load and part sensible heat load.
Adopt the present invention two finned heat exchangers can be blended in to an air-conditioning system, simply realize efficiently and in an air-conditioning system, move two kinds of different evaporating temperatures simultaneously, realize the humiture of air-conditioning and independently control target and realize higher system energy efficiency.
Embodiment tetra-: have the multi-connected air conditioning system of multiple indoor heat exchangers and water system heat exchange end, can realize two kinds of different evaporating temperatures or condensation temperature in system, as shown in Figure 6 simultaneously.
As shown in Figure 6, the first indoor heat exchange unit is a water system heat exchange end, connect the first tracheae valve and the first cross valve, in the second indoor heat exchanger, the 3rd indoor heat exchanger, fourth ventricle, heat exchanger is the indoor apparatus of air conditioner that adopts cold-producing medium heat exchange, the common composition of these three indoor heat exchangers and electric expansion valve thereof the second indoor heat exchange unit, is connected in parallel to the second tracheae valve and the second cross valve. In same system, realize two different refrigerant circulation loops, the same with embodiment mono-, suppose that the first indoor heat exchange unit is a floor cooling heating end, whole system can realize single compressor indoor set refrigeration, double-compressor indoor set refrigeration, single compressor floor cooling, double-compressor floor cooling, double-compressor indoor set and five kinds of operational modes of floor air conditioning at refrigerating operaton; Heating operation can realize that single compressor indoor set heats, double-compressor indoor set heats, single compressor floor heating, double-compressor floor heating, double-compressor indoor set and five kinds of operational modes of floor united heat.
Owing to adopting the system implementation of embodiment tetra-, whole system can be applied to multiple interior spaces simultaneously, meets the air-conditioning demand in many rooms. The indoor heat exchanger quantity of whole air-conditioning system can be adjusted according to actual demand, at most altogether can 64 indoor heat exchangers in parallel.
Embodiment five: outside adopts the multi-connected air conditioning system of Multi-compressor parallel operation and multiple indoor heat exchanger parallel runnings, can realize two kinds of different evaporating temperatures or condensation temperature, as shown in Figure 7 simultaneously in system.
For the larger occasion of room conditioning load, or cause the occasion that whole system total load is larger, off-premises station need to adopt Multi-compressor parallel mode to meet the demand of total load because air-conditioned room corresponding to system is more.
Shown in Fig. 7, the exhaust outlet of the first compressor and the second compressor is held with the D that first and second compressor check valve is connected in parallel to the first cross valve by first and second oil eliminator separately, and air entry is connected in parallel to the first gas-liquid separator. The exhaust outlet of the 3rd compressor and the 4th compressor is by third and fourth oil eliminator and the 3rd separately, the D end that the 4th compressor check valve is connected in parallel to the second cross valve, and air entry is connected in parallel to the second gas-liquid separator.
System can be according to the size of required load, selects required compressor parallel mode and number of units. The indoor heat exchanger quantity of whole air-conditioning system can be adjusted according to actual demand, at most altogether can 64 indoor heat exchangers in parallel.
Embodiment six
As Fig. 8, a kind of two warm indoor apparatus of air conditioner, are made up of main liquid tube, the first separating tube, the second separating tube, the first electric expansion valve, the second electric expansion valve, indoor heat exchanger, blower fan, the first gas-distributing pipe, the second gas-distributing pipe.
For the refrigerant shunting mode of concrete indoor heat exchanger, describe as an example of the finned heat exchanger shown in Fig. 9 example, two rows before and after this finned heat exchanger has, every row's finned heat exchanger has 8 heat exchanger tubes. By the connection of elbow, it is four heat exchange branch roads that these heat exchanger tubes are connected, and these four heat exchange branch roads are staggeredly arranged.
Finned heat exchanger shown in Fig. 9 is connected to the concrete mode of indoor set entirety can be referring to Figure 10, cold-producing medium by the first separating tube and the first electric expansion valve is split into two-way, two heat exchange branch roads that enter finned heat exchanger coil pipe, cold-producing medium gathers to the first gas-distributing pipe after heat exchanger heat exchange. Cold-producing medium by the second separating tube and the second electric expansion valve is also split into two-way, enters another two heat exchange branch roads of finned heat exchanger coil pipe, and cold-producing medium gathers to the second gas-distributing pipe after front-seat heat exchanger heat exchange.
These are only example, heat exchanger row can be that 2 to 6 rows are even more in actual applications, and a point way for the heat exchanger tube radical of heat exchanger and cold-producing medium shunting can be more.
Figure 11 is the schematic diagram that adopts two temperature indoor apparatus of air conditioner of another kind of indoor heat exchanger shunting mode to be connected with Double-working-condition air-conditioner outdoor unit.
Its key point is in the kind of refrigeration cycle process of air-conditioning refrigerant, be divided into two-way through outdoor condensed refrigerant liquid, carry out respectively throttling, form the refrigerant air-liquid two phase flow of the different saturation temperatures of two-way, enter respectively indoor heat exchanger and carry out heat exchange, wherein a road cold-producing medium carries out heat exchange at the part heat exchange branch road of indoor heat exchanger, another road cold-producing medium carries out heat exchange at other heat exchange branch road of indoor heat exchanger, and two-way cold-producing medium flows back to off-premises station along different pipelines separately after outflow heat exchanger respectively and completes kind of refrigeration cycle. For completing whole kind of refrigeration cycle, can be that two off-premises stations complete jointly, can be also a Double-working-condition off-premises station that can simultaneously move different evaporating temperatures completes separately.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that the concrete enforcement of the present invention is confined to above-mentioned these explanations. For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. a Double-working-condition air-conditioning, it mainly comprises two indoor heat exchange units and the off-premises station being connected with indoor heat exchange unit, it is characterized in that: described indoor heat exchange unit is made up of at least one indoor set, described off-premises station is provided with two compressor units, the cross valve that each compressor unit is connected by least one compressor and with compressor forms, two compressor units converge and are connected to outdoor heat exchanger, outdoor heat exchanger is communicated to two indoor heat exchange units by pipeline parallel connection, two indoor heat exchange unit other ends are connected to respectively corresponding compressor unit separately,
Two compressor units and two indoor heat exchange units form respectively the connected loop of two sealings, and these two connected loops share outdoor heat exchanger;
The indoor electronic expansion valve that indoor set mainly comprises indoor heat exchanger and is in series with indoor heat exchanger.
2. a kind of Double-working-condition air-conditioning according to claim 1, is characterized in that: described compressor unit is in series by a compressor and a cross valve;
Described compressor unit is in series by a compressor, an oil eliminator, a compressor check valve, a cross valve and a gas-liquid separator;
Cross valve in two compressor units is connected by a two-way control module separately and between the pipeline that is connected of indoor heat exchange unit.
3. a kind of Double-working-condition air-conditioning according to claim 1, is characterized in that: described compressor unit is in series by compressor bank, an oil eliminator, a compressor check valve, a cross valve and a gas-liquid separator;
Described compressor bank is formed in parallel by least two compressors, and the cross valve in two compressor units is connected by a two-way control module separately and between the pipeline that is connected of indoor heat exchange unit.
4. according to a kind of Double-working-condition air-conditioning described in claim 2 or 3, it is characterized in that: described two-way control module is bidirectional control valve; Or adopt two groups of unidirectional control modules to be formed in parallel, every group of unidirectional control module is in series by a Unidirectional solenoid valve and a check valve.
5. a kind of Double-working-condition air-conditioning according to claim 1, is characterized in that: between described outdoor heat exchanger and indoor heat exchange unit, be in series with an outdoor electric expansion valve, a liquid storage gas and a liquid tube valve;
Between indoor heat exchange unit and compressor unit, be in series with a tracheae valve.
6. a kind of Double-working-condition air-conditioning according to claim 5, is characterized in that: on described outdoor electric expansion valve, be parallel with an outdoor check valve, a side of outdoor heat exchanger is provided with corresponding with it outdoor fan.
7. a kind of Double-working-condition air-conditioning according to claim 1, it is characterized in that: in indoor heat exchanger, be provided with at least two group heat exchange branch roads, one end of indoor heat exchanger is provided with main liquid tube, between main liquid tube and indoor heat exchanger, being divided into structure by cold-producing medium is connected with the entrance point of heat exchange branch road, the other end of indoor heat exchanger is provided with the separate pipeline corresponding with cold-producing medium liquid separation structure, separates pipeline and is connected with the port of export of heat exchange branch road respectively;
Described cold-producing medium liquid separation structure is provided with throttling arrangement.
8. a kind of Double-working-condition air-conditioning according to claim 7, is characterized in that: described cold-producing medium is divided into structure and is formed in parallel by 2 separating tubes, is respectively equipped with a throttling arrangement on every separating tube, and described throttling arrangement adopts throttling electric expansion valve;
The described pipeline that separates is made up of 2 gas-distributing pipes, is respectively equipped with a gas-tpe fitting on every gas-distributing pipe.
9. a kind of Double-working-condition air-conditioning according to claim 8, is characterized in that: every separating tube is connected with a corresponding liquid pipe respectively, and a corresponding liquid pipe quantity is more than or equal to 1, and each liquid pipe is connected with the entrance point of heat exchange branch road respectively;
Every gas-distributing pipe is connected with corresponding point gas branch pipe respectively, and each point of gas branch pipe is connected with the port of export of heat exchange branch road respectively.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609588A (en) * | 2020-04-24 | 2020-09-01 | 珠海格力电器股份有限公司 | Double-temperature air conditioning system, control method and air conditioner |
| CN112066585A (en) * | 2020-09-16 | 2020-12-11 | 珠海格力电器股份有限公司 | Temperature control device, dual-temperature refrigeration method, electronic device, and computer-readable medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575568Y (en) * | 2002-10-16 | 2003-09-24 | 广东科龙电器股份有限公司 | Observing device for vertical kiln |
| CN101131266A (en) * | 2006-08-22 | 2008-02-27 | 珠海格力电器股份有限公司 | Heat-reclamation multi-compressors |
| CN201028862Y (en) * | 2007-04-18 | 2008-02-27 | 珠海格力电器股份有限公司 | Heat pump system using auxiliary cooling coil technology |
| CN101392968A (en) * | 2007-09-20 | 2009-03-25 | 无锡同方人工环境有限公司 | Large-capacity multiple air conditioner/heat pump units |
| CN102620362A (en) * | 2012-03-27 | 2012-08-01 | 美的集团有限公司 | Low-temperature strong-heat multi-split air conditioning system |
| CN103807997A (en) * | 2012-11-14 | 2014-05-21 | 珠海格力电器股份有限公司 | Air conditioner system and control method thereof |
| CN104235978A (en) * | 2014-08-22 | 2014-12-24 | 海信（山东）空调有限公司 | Cold storage and heat storage type air conditioner |
| CN104764240A (en) * | 2014-01-07 | 2015-07-08 | 海尔集团公司 | Air conditioning system having defrosting function and control method thereof |
| CN205332583U (en) * | 2015-12-10 | 2016-06-22 | 张贝 | Duplex condition air conditioner |
-
2015
- 2015-12-10 CN CN201510910152.XA patent/CN105605818A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575568Y (en) * | 2002-10-16 | 2003-09-24 | 广东科龙电器股份有限公司 | Observing device for vertical kiln |
| CN101131266A (en) * | 2006-08-22 | 2008-02-27 | 珠海格力电器股份有限公司 | Heat-reclamation multi-compressors |
| CN201028862Y (en) * | 2007-04-18 | 2008-02-27 | 珠海格力电器股份有限公司 | Heat pump system using auxiliary cooling coil technology |
| CN101392968A (en) * | 2007-09-20 | 2009-03-25 | 无锡同方人工环境有限公司 | Large-capacity multiple air conditioner/heat pump units |
| CN102620362A (en) * | 2012-03-27 | 2012-08-01 | 美的集团有限公司 | Low-temperature strong-heat multi-split air conditioning system |
| CN103807997A (en) * | 2012-11-14 | 2014-05-21 | 珠海格力电器股份有限公司 | Air conditioner system and control method thereof |
| CN104764240A (en) * | 2014-01-07 | 2015-07-08 | 海尔集团公司 | Air conditioning system having defrosting function and control method thereof |
| CN104235978A (en) * | 2014-08-22 | 2014-12-24 | 海信（山东）空调有限公司 | Cold storage and heat storage type air conditioner |
| CN205332583U (en) * | 2015-12-10 | 2016-06-22 | 张贝 | Duplex condition air conditioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609588A (en) * | 2020-04-24 | 2020-09-01 | 珠海格力电器股份有限公司 | Double-temperature air conditioning system, control method and air conditioner |
| CN112066585A (en) * | 2020-09-16 | 2020-12-11 | 珠海格力电器股份有限公司 | Temperature control device, dual-temperature refrigeration method, electronic device, and computer-readable medium |
| CN112066585B (en) * | 2020-09-16 | 2024-06-07 | 珠海格力电器股份有限公司 | Temperature control device, dual-temperature refrigeration method, electronic device and computer readable medium |
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