CN108397825A - Conditioner - Google Patents
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- CN108397825A CN108397825A CN201810117114.2A CN201810117114A CN108397825A CN 108397825 A CN108397825 A CN 108397825A CN 201810117114 A CN201810117114 A CN 201810117114A CN 108397825 A CN108397825 A CN 108397825A
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- China
- Prior art keywords
- heat exchanger
- refrigerant
- supercooling heat
- switching part
- connecting tube
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Conditioner including one or more outdoor unit and indoor unit leads to the project of reduced performance in the presence of because warming operation becomes larger with the necessary deviation for exchanging heat for supercooling heat exchanger in blowdown firing.The switching mechanism for switching refrigerant in the type of flow of supercooling heat exchanger is provided in the conditioner of the present invention, in for blowdown firing, the 1st, the 2nd supercooling heat exchanger arrangement is series connection when big for cold load, refrigerant is to be flowed with a channel, and the refrigerant of high temperature and low temperature becomes opposite stream；The 2nd supercooling heat exchanger is used only for cold load hour, refrigerant becomes to be flowed with a channel, and the refrigerant of high temperature and low temperature becomes opposite stream.In warming operation, 1st, the 2nd supercooling heat exchanger arrangement is parallel connection when heating load is big, and refrigerant is to be flowed with two channels, and the refrigerant of high temperature and low temperature is parallel flowing；The 2nd supercooling heat exchanger is used only in heating load hour, and the refrigerant of high temperature and low temperature is parallel flowing.
Description
Technical field
The present invention relates to conditioners.
Background technology
In the indoor unit of outdoor unit and one or more including one or more, more above-mentioned indoor unit energy
Enough in cooling or the conditioner for any one operating that heats, outdoor unit and Duo Tai indoor units are using as unit
Between be piped flue, liquid line connection, above-mentioned outdoor unit have compressor, four-way valve, outdoor heat exchanger and outdoor it is swollen
Swollen mechanism, above-mentioned indoor unit have indoor heat exchanger and indoor expansion mechanism.Also, when warming operation, the system of compressor
Cryogen discharge pipe is connect via four-way valve with flue, is connect successively with indoor heat exchanger, liquid line, outdoor heat exchanger,
It is connected via the refrigerant suction pipe of four-way valve and compressor.When for blowdown firing, the refrigerant discharge leader of compressor is via four-way
Valve is connect with outdoor heat exchanger, is connect successively with liquid line, indoor heat exchanger, flue, via four-way valve and compressor
Refrigerant suction pipe connection.Switch four-way valve and can implement for blowdown firing or warming operation.
In order to improve performance from existing structure, motion, which has refrigerant to have, is divided into the refrigerant flowed to evaporator and not
It is flowed to evaporator in the refrigerant that the refrigerant suction pipe of compressor flows, both sides' refrigerant utilizes supercooling heat exchanger
Carry out the structure of heat exchange (for example, referring to patent document 1).
When for blowdown firing, divided after by supercooling heat exchanger 106 by the refrigerant of outdoor heat exchanger 104
Branch carries out heat exchange, as a result, with the refrigerant for becoming low temperature using supercooling expansion mechanism 107 in supercooling heat exchanger 106
The degree of subcooling of the refrigerant of heat exchanger 302a, 302b (evaporator) flowings indoors becomes larger, therefore, even if refrigerant is made to follow
Circular rector reduces the cooling ability that can be also needed.In addition, because the circulating mass of refrigerant supplied to indoor unit 300a, 300b
It reduces, so the refrigerant side pressure loss reduction of liquid line 210, flue 220, indoor heat exchanger 302a, 302b, cooling
Performance improves (with reference to Figure 21).
In warming operation, pass through the inside points of the refrigerant of indoor heat exchanger 302a, 302b unit 100 indoors
Branch, one are supplied to supercooling heat exchanger 106, and another one becomes low temperature to supercooling heat using supercooling expansion mechanism 107
Exchanger 106 supplies.By carrying out heat exchange in supercooling heat exchanger 106, flowed at outdoor heat exchanger 104 (evaporator)
The degree of subcooling of refrigerant become larger, therefore, can be needed reducing in the circulating mass of refrigerant that evaporator flows
Cooling ability.In addition, because the circulating mass of refrigerant supplied to outdoor heat exchanger 104 tails off, refrigerant side pressure damage
Losing reduces, and heating performance improves.
Existing technical literature
Patent document
Patent document 1
Patent document 1：(Japan) special open 2016-142419
Invention content
The subject that the invention solves
But in warming operation, evaporator becomes outdoor heat exchanger 104, the piping in outdoor unit 100 it is winding compared with
Short thus the refrigerant side pressure loss the influence is smaller, therefore, becomes smaller in the necessary heat that exchanges of supercooling heat exchanger 106,
But in for blowdown firing, evaporator becomes indoor heat exchanger 302a, 302b, in such as longer indoor unit of connecting pipings length
Connection number of units it is less in the case of, the refrigerant side pressure loss is affected, therefore, in supercooling heat exchanger 106
Necessity exchanges heat and becomes larger.
Therefore, it if necessity when for blowdown firing exchanges design supercooling heat exchanger 106 based on heat, is heating
The performance of supercooling heat exchanger 106 becomes superfluous when operating, leads to the refrigeration for being back to the refrigerant suction pipe of compressor 101
The degree of superheat of agent becomes larger.
Thus, the following topics exist：In warming operation and in blowdown firing, due in supercooling heat exchanger 106 must
The deviation for exchanging heat becomes larger, and reduced performance.
The present invention is to solve the invention of the above subject, can be by suitably controlling in supercooling heat exchanger with offer
Exchange heat and realize performance improve conditioner for the purpose of.
The method used for solving the problem
In order to solve the above problems, in the conditioner of the present invention, including indoor unit and outdoor unit
Conditioner, above-mentioned outdoor unit include：Multiple supercooling heat exchangers；Liquid line is handed over by above-mentioned supercooling heat
Parallel operation；Connecting tube, in the downstream of above-mentioned supercooling heat exchanger from aforesaid liquid pipe on the basis of refrigerant stream when cooling
Branch, by the suction side for being connected to compressor after above-mentioned supercooling heat exchanger；Supercooling expansion mechanism is set to above-mentioned
Connecting tube；And switching mechanism, the type of flow of the switching refrigerant for more above-mentioned supercooling heat exchangers.
In such a configuration, above-mentioned switching mechanism can be by refrigerant for the stream of more above-mentioned supercooling heat exchangers
Flowing mode is switched to series connection, or is switched to parallel connection.
In such a configuration, above-mentioned switching mechanism can be according to refrigerant for more above-mentioned supercooling heat exchangers
The type of flow is switched to using an above-mentioned supercooling heat exchanger, or uses more above-mentioned supercooling heat exchangers.
In such a configuration, main liquid line and branch fluid pipe, above-mentioned connecting tube are provided with to aforesaid liquid tube side-by-side
Abreast it is provided with main connecting tube and branch's connecting tube, above-mentioned supercooling heat exchanger arrangement is in making above-mentioned main liquid line and above-mentioned
Any one of branch fluid pipe by and any one of make above-mentioned main connecting tube and branch's connecting tube by position,
Above-mentioned switching mechanism have multiple switching parts, above-mentioned switching part in above-mentioned main liquid line or above-mentioned branch fluid pipe, until
It is set to one of upstream or the downstream of above-mentioned supercooling heat exchanger less, also, connects in above-mentioned main connecting tube and above-mentioned branch
In taking over, it is at least set to one of upstream or downstream of above-mentioned supercooling heat exchanger.
Invention effect
In the conditioner of the present invention, difference when according to for blowdown firing or when warming operation, or for cold load
Or the difference of heating load, the type of flow for the refrigerant for flowing through supercooling heat exchanger can be changed, therefore, it is possible to effectively
Carry out supercooling.
Description of the drawings
Fig. 1 be in embodiments of the present invention 1 for blowdown firing when (big for cold load) conditioner refrigeration
Agent loop diagram.
Fig. 2 be in embodiments of the present invention 1 for blowdown firing when (small for cold load) conditioner refrigeration
Agent loop diagram.
The refrigeration of the conditioner of (heating load is big) when Fig. 3 is the warming operation in embodiments of the present invention 1
Agent loop diagram.
The refrigeration of the conditioner of (heating load is small) when Fig. 4 is the warming operation in embodiments of the present invention 1
Agent loop diagram.
Fig. 5 is the figure of the opening and closing pattern (pattern) for the switching part for indicating embodiment 1.
Fig. 6 is the figure for the switching part for indicating embodiment 1.
Fig. 7 is the figure of the variation for the switching part for indicating embodiment 1.
Fig. 8 is the figure for the integrated mode for indicating switching part.
Fig. 9 is the figure for the switching part for indicating embodiment 2.
Figure 10 is the figure of the opening and closing pattern for the switching part for indicating embodiment 2.
Figure 11 is the figure of a pattern of the opening and closing for the switching part for indicating embodiment 2.
Figure 12 is the figure of a pattern of the opening and closing for the switching part for indicating embodiment 2.
Figure 13 is the figure of a pattern of the opening and closing for the switching part for indicating embodiment 2.
Figure 14 is the figure of a pattern of the opening and closing for the switching part for indicating embodiment 2.
Figure 15 is the figure for the switching part for indicating embodiment 3.
Figure 16 is the figure of the opening and closing pattern for the switching part for indicating embodiment 3.
Figure 17 is the figure for indicating to change the variation of the position of supercooling heat exchanger.
Figure 18 is the figure of the integrated mode of the switching part in the variation for indicate Figure 17.
Figure 19 is the figure for indicating to change the variation of the position of supercooling heat exchanger.
Figure 20 is the figure of the integrated mode of the switching part in the variation for indicate Figure 19.
Figure 21 be in conventional example for blowdown firing when conditioner refrigerant loop figure.
Reference sign
10 conditioners
100 outdoor units
101 compressors
103 four-way valves
104 outdoor heat exchangers
Expansion mechanism outside Room 105
The 1st supercooling heat exchangers of 106a
The 2nd supercooling heat exchangers of 106b
107 supercooling expansion mechanisms
The 1st switching parts of 108a
The 2nd switching parts of 108b
The 3rd switching parts of 108c
The 4th switching parts of 108d
The 5th switching parts of 108e
The 6th switching parts of 108f
The 7th switching parts of 108g
The 8th switching parts of 108h
210 liquid lines
211 the 1st branch fluid pipes (branch fluid pipe)
212 the 2nd branch fluid pipes (branch fluid pipe)
213 main liquid lines
220 flues
250 connecting tubes
251 the 1st branch's connecting tubes (branch's connecting tube)
252 the 2nd branch's connecting tubes (branch's connecting tube)
253 main connecting tubes
280,380,480,580,680 switching mechanism
300a, 300b indoor unit
Expansion mechanism in the room 301a, 301b
302a, 302b indoor heat exchanger
Specific implementation mode
The conditioner of 1st invention, which is characterized in that in the air conditioning dress including indoor unit and outdoor unit
In setting, above-mentioned outdoor unit includes：Multiple supercooling heat exchangers；Liquid line passes through above-mentioned supercooling heat exchanger；Connection
Pipe, is passed through in the downstream of above-mentioned supercooling heat exchanger from aforesaid liquid pipe branch on the basis of refrigerant stream when cooling
The suction side of compressor is connected to after above-mentioned supercooling heat exchanger；Supercooling expansion mechanism is set to above-mentioned connecting tube；With
Switching mechanism, the type of flow of the switching refrigerant for more above-mentioned supercooling heat exchangers.
Difference when as a result, according to for blowdown firing or when warming operation or the difference for cold load or heating load, can
The type of flow for changing the refrigerant for flowing through supercooling heat exchanger, therefore, it is possible to which supercooling is effectively performed.
The conditioner of 2nd invention, which is characterized in that the above-mentioned switching mechanism of the 1st invention is by refrigerant for more
The type of flow of the above-mentioned supercooling heat exchanger of platform is switched to series connection, or is switched to parallel connection.
In the case of for example larger for cold load when for blowdown firing as a result, by multiple systems to supercooling heat exchanger
The type of flow of cryogen is set as connecting, and then refrigerant is made to be flowed using a channel, and refrigerant flow rates become larger as a result,.The feelings
Under condition, the refrigerant by liquid line becomes opposite stream with the refrigerant by branched pipe therefore heat transfer property improves.Therefore, exist
When for blowdown firing for cold load it is larger in the case of, the performance of supercooling heat exchanger improves, thus exchanges heat and increase, supercooling
But degree can be controlled in wide range, can realize that Cooling Performance improves.
In addition, in the case that for example in warming operation, heating load is larger, by multiple systems to supercooling heat exchanger
The type of flow of cryogen is set as in parallel, so that refrigerant is flowed using two channels, refrigerant flow rates become smaller as a result,.In this case,
As parallel stream reason, this heat transfer property is suppressed refrigerant by liquid line with the refrigerant by branched pipe.Therefore, exist
Warming operation and heating load it is larger in the case of supercooling heat exchanger performance be suppressed, therefore exchange heat reduce, mistake
Cooling degree can be controlled in smaller range, can realize that heating performance improves.
The conditioner of 3rd invention, which is characterized in that the switching mechanism of the 1st invention or the 2nd invention is according to refrigerant
The type of flow of more above-mentioned supercooling heat exchangers is switched to using an above-mentioned supercooling heat exchanger, or is used
More above-mentioned supercooling heat exchangers.
In the case of for example smaller for cold load when for blowdown firing as a result, it can be set as handing over using a supercooling heat
Parallel operation.In this case, even if can prevent from being back to if in the case where for cold load, smaller and circulating mass of refrigerant is less
The degree of superheat of the refrigerant of the suction inlet of the compressor of cooling heat exchanger outlet becomes too much.For cold load when for blowdown firing
In the case of smaller, even if can prevent from being back to if in the case where for cold load, smaller and circulating mass of refrigerant is less
The degree of superheat of the refrigerant of the suction inlet of the compressor of cooling heat exchanger outlet becomes too much, thereby, it is possible to maintain controlling,
Realize that Cooling Performance improves.
In addition, in the case that for example in warming operation, heating load is smaller, can be set as handing over using a supercooling heat
Parallel operation.In this case, even and if circulating mass of refrigerant less in the case that if smaller in heating load can prevent from being back to
The degree of superheat of the refrigerant of the suction inlet of the compressor of cooling heat exchanger outlet becomes too much.In warming operation and heating load
Heating load is smaller in the case of smaller and circulating mass of refrigerant is less, though in this case if can prevent from being back to
The degree of superheat of the refrigerant of the suction inlet of the compressor of supercooling heat exchanger outlet becomes too much, and thereby, it is possible to maintain to control
Property, it can realize that heating performance improves.
4th invention is the conditioner as described in claim 1 to claim 3, which is characterized in that aforesaid liquid
It is provided with to tube side-by-side main liquid line and branch fluid pipe, above-mentioned connecting tube is abreast provided with main connecting tube and is connected with branch
Pipe, above-mentioned supercooling heat exchanger arrangement in make any one of above-mentioned main liquid line and above-mentioned branch fluid pipe by and
Make any one of above-mentioned main connecting tube and branch's connecting tube by position, above-mentioned switching mechanism have multiple switching parts,
Above-mentioned switching part is at least set to the upper of above-mentioned supercooling heat exchanger in above-mentioned main liquid line or above-mentioned branch fluid pipe
One of trip or downstream, also, in above-mentioned main connecting tube and above-mentioned branch's connecting tube, be at least set to above-mentioned supercooling heat and hand over
One of upstream or downstream of parallel operation.
Difference when as a result, according to for blowdown firing or when warming operation or the difference for cold load or heating load, can
The type of flow for changing the refrigerant for flowing through supercooling heat exchanger, therefore, it is possible to which supercooling is effectively performed.
Hereinafter, the embodiments of the present invention will be described with reference to the drawings.In addition, the present invention is not defined to the implementation
Mode.
(embodiment 1)
In present embodiment for blowdown firing when (big for cold load) conditioner 10 refrigerant circuit diagram
In Fig. 1.The conditioner 10 of Fig. 1 becomes the knot that more indoor units 300a, 300b are connected in an outdoor unit 100
Structure.In addition, refrigeration cycle structure is not limited to structure shown in FIG. 1.For example, outdoor unit can connect to two more parallels.
Outdoor unit 100 and indoor unit 300a, 300b utilize 230 connection of piping between the unit of refrigerant circulation.Unit
Between piping 230 be made of liquid line 210 and flue 220.According to the present embodiment, more indoor units 300a, 300b are set as
It can be operated according to any one of cooling or heating.
Outdoor unit 100 has compressor 101.Being provided in the discharge side of compressor 101 will be discharged from compressor 101
The refrigerator oil that refrigerant is included detaches and is back to the oil eliminator 102 of compressor 101.Under the oil eliminator 102
Trip is provided with according to the operating condition for blowdown firing, warming operation and switches the four-way valve 103 of refrigerant circuit.In the four-way valve
In the case that refrigerant circuit is switched to the operating condition for blowdown firing by 103, has to utilize in the downstream of four-way valve 103 and not scheme
The blower-use shown is in the outdoor heat exchanger 104 to outdoor carry out exothermic/endothermic.
Outdoor heat exchanger 104 via outdoor expansion mechanism 105 using liquid line 210 and be set to indoor unit 300a,
Indoor heat exchanger 302a, 302b connection of 300b.
Outdoor expansion mechanism 105 is to being flowed into aftermentioned 1st supercooling heat exchanger 106a or the 2nd supercooling heat exchanger
106 refrigerant temperature is adjusted.
Liquid line 210 includes main liquid line 213, the 211 and the 2nd branch fluid pipe of the 1st branch fluid pipe (branch fluid pipe)
(branch fluid pipe) 212.
Main liquid line 213 is connect with the 1st branch fluid pipe 211.1st branch fluid pipe 211 leads to from 210 branch of liquid line
The 1st supercooling heat exchanger 106a is crossed, is connect again with main liquid line 213.By the 1st branch fluid pipe 211 again with main liquid
The position that body pipe 213 connects is set as the 1st interconnecting piece 221.
1st branch fluid pipe 211 is connect with the 2nd branch fluid pipe 212.2nd branch fluid pipe 212 is from the 1st branch fluid
211 branch of pipe is connect by the 2nd supercooling heat exchanger 106b with main liquid line 213.By the 2nd branch fluid pipe 212 and master
The connecting portion of liquid line 213 is set as the 2nd interconnecting piece 222.
Main liquid line 213, the 1st branch fluid pipe 211 and the 2nd branch fluid pipe 212 are set as parallel with one another.
The liquid of the position than the 2nd interconnecting piece 222 downstream is set on the basis of refrigerant stream when for blowdown firing
Pipe 210 is connected with connecting tube 250.
Connecting tube 250 is connect via supercooling expansion mechanism 107 with compressor suction line 260.Herein, compressor suction line
260 be piping that suck the refrigerant flowing of compressor 101, connection four-way valve 103 and compressor 101.It is swollen using supercooling
Swollen mechanism 107 is depressurized and is flowed in connecting tube 250 as the refrigerant of low temperature.
Connecting tube 250 includes main connecting tube 253, the 251 and the 2nd branch's connecting tube of the 1st branch's connecting tube (branch's connecting tube)
(branch's connecting tube) 252.
Main connecting tube 253 is connect with the 1st branch's connecting tube 251.1st branch's connecting tube 251 is in the 3rd interconnecting piece 223 from even
250 branch of take over connect with main connecting tube 253 again via the 1st supercooling heat exchanger 106a.
In addition, being connect with the 2nd branch's connecting tube 252 in main connecting tube 253.2nd branch's connecting tube 252 is in the 4th interconnecting piece
224 connect from 253 branch of main connecting tube, by the 2nd supercooling heat exchanger 106b with the 1st branch's connecting tube 251.
On the basis of the refrigerant stream for flowing through connecting tube 250, the 4th interconnecting piece 224 is located at leans on upstream than the 3rd interconnecting piece 223.
Main connecting tube 253, the 1st branch's connecting tube 251 and the 2nd branch's connecting tube 252 are set as parallel with one another.
1st branch fluid pipe 211 and the 1st branch's connecting tube 251 are connected by the 1st supercooling heat exchanger 106a.
In addition, the 2nd branch fluid pipe 212 and the 2nd branch's connecting tube 252 are connected by the 2nd supercooling heat exchanger 106b.
On the basis of refrigerant stream when for blowdown firing, positioned at than 221 main liquid line 213 by the upstream of the 1st interconnecting piece
With the 1st switching part 108a.
In addition, on the basis of refrigerant stream when for blowdown firing, upstream is being leaned on positioned at than the 1st supercooling heat exchanger 106a
The 1st branch fluid pipe 211 have the 3rd switching part 108c.
In addition, there is the 4th switching part in the main liquid line 213 between the 1st interconnecting piece 221 and the 2nd interconnecting piece 222
108d。
On the basis of the refrigerant stream for flowing through connecting tube 250, positioned at the main connecting tube than the 3rd interconnecting piece 223 downstream
253 have the 2nd switching part 108b.
In addition, on the basis of the refrigerant stream for flowing through connecting tube 250, leaned on positioned at than the 1st supercooling heat exchanger 106a
1st branch's connecting tube 251 in downstream has the 5th switching part 108e.
In addition, there is the 6th switching part in the main connecting tube 253 between the 2nd interconnecting piece 222 and the 3rd interconnecting piece 223
108f。
1st switching part 108a, the 2nd switching part 108b, the 3rd switching part 108c, the 4th switching part 108d, the 5th are cut
It changes component 108e and the 6th switching part 108f constitutes switching mechanism 280.
Switching mechanism 280 is by switching the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part 108c, the
4 switching part 108d, the 5th switching part 108e and the 6th switching part 108f, and to refrigerant to the 1st supercooling heat exchanger
The type of flow of 106a and the 2nd supercooling heat exchanger 106b switch over.When switching mechanism 280 is according to for blowdown firing and heating
Switch the type of flow of refrigerant when operating.
Switching mechanism 280 is passed through with refrigerant by the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b
The mode in the circuit capable of bypass formed, becomes changeable 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part
Part 108c, the 4th switching part 108d, the 5th switching part 108e and the 6th switching part 108f.It in the present embodiment, can be with
Using the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b as circuit capable of bypass, and refrigerant passes through master
The mode of liquid line 213, main connecting tube 253 switches each switching part.In addition, in this case, can be with so that refrigerant flows through
1 supercooling heat exchanger 106a, the 2nd supercooling heat exchanger 106b and by the 1st supercooling heat exchanger 106a and the 2nd be subcooled
But the mode for the circuit whole capable of bypass that heat exchanger 106b is formed switches switching mechanism 280, can also be so that refrigerant stream
The mode of any one through therefrom selecting switches switching mechanism 280.
Indoor unit 300a, 300b include indoor expansion mechanism 301a, 301b, indoor heat exchanger 302a, 302b.It is indoor
Heat exchanger 302a, 302b are using blower-use (not shown) in carrying out/the cooling that heats to interior.
Indoor heat exchanger 302a, 302b and four-way valve 103 are connected using flue 220.Four-way valve 103 and compressor
101 are connected using compressor suction line 260.
Then, the action of outdoor unit 100, indoor unit 300a, 300b is illustrated.
The flowing of the refrigerant of (big for cold load) illustrates when first, to for blowdown firing.
When for blowdown firing (big for cold load), four-way valve 103 is set to refrigerant and flows (referring to Fig.1) along solid line.
After the gas refrigerant for the high temperature and pressure being discharged from compressor 101 is detached refrigerator oil using oil eliminator 102, pass through four-way
Valve 103 is flowed into outdoor heat exchanger 104.The highly pressurised liquid condensed to extraneous air heat release using outdoor heat exchanger 104
Refrigerant passes through outdoor expansion mechanism 105.At this point, outdoor expansion mechanism 105 is controlled as making the outlet of outdoor heat exchanger 104
The degree of subcooling of refrigerant becomes defined value.
It is set as the 1st switching part 108a, the 2nd switching part 108b as opening state, the 3rd switching part 108c, the 4th
Switching part 108d, the 5th switching part 108e, the 6th switching part 108f become closed state, and refrigerant is flowed along solid line.It is logical
The refrigerant of outdoor expansion mechanism 105 is crossed after by the 1st switching part 108a, is directed to the 1st supercooling heat exchange successively
Device 106a, the 2nd supercooling heat exchanger 106b.
By the refrigerant branch of the 2nd supercooling heat exchanger 106b, one is supplied to indoor unit 300a, 300b, separately
One is directed to the 2nd supercooling heat exchanger successively after becoming low temperature using the decompression of supercooling expansion mechanism 107
106b, the 1st supercooling heat exchanger 106a carry out heat exchange and by the 2nd switching part 108b and are back to four-way valve later
Between 103 and compressor 101.At this point, supercooling expansion mechanism 107 is controlled as making to be back to the 1st supercooling heat exchanger
The degree of superheat of the refrigerant of the suction inlet of the compressor 101 of the outlets 106a or the room exported to the 2nd supercooling heat exchanger 106b
The degree of superheat or compressor 101 of the degree of subcooling of the refrigerant of interior unit 300a, 300b supply or the suction inlet of compressor 101
Outlet the degree of superheat or compressor 101 discharge temperature become defined value.
1st supercooling heat exchanger 106a, the 2nd supercooling heat exchanger 106b are configured to connect, and refrigerant is logical with one
Therefore refrigerant flow rates become larger for road (pass) flowing.In addition, in the 1st supercooling heat exchanger 106a, the 2nd supercooling heat exchanger
In 106b, the refrigerant of high temperature and the refrigerant of low temperature become the therefore heat transfer property raising of opposite stream.
The refrigerant for flowing out outdoor unit 100 is supplied via liquid line 210 to indoor unit 300a, 300b.It flows into indoor
The refrigerant of unit 300a, 300b are directed to Indoor Thermal using indoor expansion mechanism 301a, 301b decompression and as after low temperature
Exchanger 302a, 302b.The low-pressure refrigerant gas for being absorbed heat and being evaporated from air within doors using indoor heat exchanger 302a, 302b
It is back to outdoor unit 100 via flue 220.At this point, interior expansion mechanism 301a, 301b are controlled as making indoor heat exchange
The degree of superheat of the refrigerant of the outlets device 302a, 302b becomes defined value.
The refrigerant of outdoor unit 100 is back to after by four-way valve 103, and passes through the 1st supercooling heat exchanger
The refrigerant of 106a, the 2nd supercooling heat exchanger 106b and return collaborate, and are inhaled into compressor 101.
The flowing of the refrigerant of (small for cold load) illustrates when then, to for blowdown firing.
When for blowdown firing (small for cold load), four-way valve 103 is set to refrigerant along solid line flowing (with reference to Fig. 2).
After the gas refrigerant for the high temperature and pressure being discharged from compressor 101 is detached refrigerator oil using oil eliminator 102, pass through four-way
Valve 103 is flowed into outdoor heat exchanger 104.The highly pressurised liquid condensed to extraneous air heat release using outdoor heat exchanger 104
Refrigerant passes through outdoor expansion mechanism 105.At this point, outdoor expansion mechanism 105 is controlled as making the outlet of outdoor heat exchanger 104
The degree of subcooling of refrigerant becomes defined value.
Being set as the 1st switching part 108a, the 5th switching part 108e becomes opening state, the 2nd switching part 108b, the 3rd
Switching part 108c, the 4th switching part 108d, the 6th switching part 108f become closed state, and refrigerant is flowed along solid line.It is logical
The refrigerant of outdoor expansion mechanism 105 is crossed after by the 1st switching part 108a, is directed to the 1st supercooling heat exchange successively
Device 106a, the 2nd supercooling heat exchanger 106b.
By the refrigerant branch of the 2nd supercooling heat exchanger 106b, one is supplied to indoor unit 300a, 300b, separately
One is depressurized using supercooling expansion mechanism 107 as after low temperature, is directed to the 2nd supercooling heat exchanger 106b and is carried out
Heat exchange is back to by the 5th switching part 108e between four-way valve 103 and compressor 101 later.At this point, supercooling expands
Mechanism 107 is controlled as making to be back to the refrigerant of the suction inlet of the compressor 101 of the 2nd outlets supercooling heat exchanger 106b
The supercooling for the refrigerant that the degree of superheat or indoor unit 300a, 300b for being exported to the 2nd supercooling heat exchanger 106b are supplied
The discharge of the degree of superheat or compressor 101 of the degree of superheat of the suction inlet of degree or compressor 101 or the outlet of compressor 101
Temperature becomes defined value.
In the 2nd supercooling heat exchanger 106b, the refrigerant of high temperature and the refrigerant of low temperature become opposite stream and therefore pass
Hot property improves.In addition, because the 2nd supercooling heat exchanger 106b is used only, even if in and refrigeration smaller for cold load
In the case that agent internal circulating load is less, the suction for being back to the compressor 101 of the 2nd outlets supercooling heat exchanger 106b can be also prevented
The degree of superheat of the refrigerant of entrance becomes too much.
The refrigerant for flowing out outdoor unit 100 is supplied via liquid line 210 to indoor unit 300a, 300b.It flows into indoor
The refrigerant of unit 300a, 300b are directed to Indoor Thermal using indoor expansion mechanism 301a, 301b decompression and as after low temperature
Exchanger 302a, 302b.The low-pressure refrigerant gas for being absorbed heat and being evaporated from air within doors using indoor heat exchanger 302a, 302b
It is back to outdoor unit 100 via flue 220.At this point, interior expansion mechanism 301a, 301b are controlled as making indoor heat exchange
The degree of superheat of the refrigerant of the outlets device 302a, 302b becomes defined value.
The refrigerant of outdoor unit 100 is back to after by four-way valve 103, and passes through the 1st supercooling heat exchanger
The refrigerant of 106a, the 2nd supercooling heat exchanger 106b and return collaborate, and are inhaled into compressor 101.
The flowing of the refrigerant of (heating load is big) illustrates when then, to warming operation.
In warming operation (heating load is big), four-way valve 103 is set to refrigerant along solid line flowing (with reference to Fig. 3).
The gas refrigerant for the high temperature and pressure being discharged from compressor 101 passes through four after detaching refrigerator oil using oil eliminator 102
Port valve 103 is supplied to indoor unit 300a, 300b.
The refrigerant for flowing out outdoor unit 100 is supplied via flue 220 to indoor unit 300a, 300b, and is guided
To indoor heat exchanger 302a, 302b.The high pressure liquid condensed to air heat release within doors using indoor heat exchanger 302a, 302b
Cryogen passes through indoor expansion mechanism 301a, 301b.At this point, interior expansion mechanism 301a, 301b are controlled as making Indoor Thermal
The degree of subcooling of the refrigerant of the outlets exchanger 302a, 302b becomes defined value.
The refrigerant of outflow indoor unit 300a, 300b are directed to outdoor unit 100 via liquid line 210.It is set as
3rd switching part 108c, the 4th switching part 108d, the 5th switching part 108e, the 6th switching part 108f become opening state,
1st switching part 108a, the 2nd switching part 108b become closed state, and refrigerant is flowed along solid line.
The refrigerant branch of outdoor unit 100 is flowed into, one is after by supercooling heat exchanger 106a, 106b to outdoor
Heat exchanger 104 supplies, after another one becomes low temperature using the decompression of supercooling expansion mechanism 107, in the 1st supercooling heat exchange
Device 106a, the 2nd supercooling heat exchanger 106b are back to after carrying out heat exchange between four-way valve 103 and compressor 101.At this point,
Supercooling expansion mechanism 107 is controlled as making in the 1st supercooling heat exchanger 106a, the 2nd outlets supercooling heat exchanger 106b
Collaborate and be back to the degree of superheat of the refrigerant of the suction inlet of compressor 101 or in the 1st supercooling heat exchanger 106a, the 2nd mistake
Cooling heat exchanger 106b exports the degree of subcooling or compressor 101 of interflow and the refrigerant to the supply of outdoor heat exchanger 104
The degree of superheat of suction inlet or the degree of superheat of outlet of compressor 101 or the discharge temperature of compressor 101 become defined
Value.
1st supercooling heat exchanger 106a, the 2nd supercooling heat exchanger 106b are configured to parallel connection, and refrigerant flows into
For two channels, therefore refrigerant flow rates become smaller.In addition, in the 1st supercooling heat exchanger 106a, the 2nd supercooling heat exchanger
In 106b, this heat transfer property is suppressed as parallel stream reason for the refrigerant of high temperature and the refrigerant of low temperature.
By being supplied to outdoor heat exchanger 104 after the 1st supercooling heat exchanger 106a, the 2nd supercooling heat exchanger 106b
The refrigerant given is directed to outdoor heat exchanger 104 after becoming low temperature using the outdoor decompression of expansion mechanism 105.It utilizes
Outdoor heat exchanger 104 from the low-pressure refrigerant gas that extraneous air absorbs heat and evaporates by four-way valve 103 after, and pass through the 1st
Supercooling heat exchanger 106a, the 2nd supercooling heat exchanger 106b and the refrigerant of return interflow, and it is inhaled into compressor
101.At this point, the degree of superheat that outdoor expansion mechanism 105 is controlled as the refrigerant for making outdoor heat exchanger 104 export becomes regulation
Value.
The flowing of the refrigerant of (heating load is small) illustrates when then, to warming operation.
In warming operation (heating load is small), four-way valve 103 is set to refrigerant along solid line flowing (with reference to Fig. 4).
The gas refrigerant for the high temperature and pressure being discharged from compressor 101 passes through four after detaching refrigerator oil using oil eliminator 102
Port valve 103 is supplied to indoor unit 300a, 300b.
The refrigerant for flowing out outdoor unit 100 is supplied via flue 220 to indoor unit 300a, 300b, and is guided
To indoor heat exchanger 302a, 302b.The high pressure liquid condensed to air heat release within doors using indoor heat exchanger 302a, 302b
Cryogen passes through indoor expansion mechanism 301a, 301b.At this point, interior expansion mechanism 301a, 301b are controlled as making Indoor Thermal
The degree of subcooling of the refrigerant of the outlets exchanger 302a, 302b becomes defined value.
The refrigerant of outflow indoor unit 300a, 300b are directed to outdoor unit 100 via liquid line 210.3rd switching
Component 108c, the 5th switching part 108e become opening state, the 1st switching part 108a, the 2nd switching part 108b, the 4th switching
Component 108d, the 6th switching part 108f become closed state, are set to refrigerant and are flowed along solid line.
The refrigerant branch of outdoor unit 100 is flowed into, one is after by the 2nd supercooling heat exchanger 106b to outdoor heat
Exchanger 104 supplies, and another one using the decompression of supercooling expansion mechanism 107 after becoming low temperature, in the 2nd supercooling heat exchange
Device 106b carries out heat exchange, is back to later between four-way valve 103 and compressor 101.At this point, 107 quilt of supercooling expansion mechanism
Control for make to be back to the refrigerant of the suction inlet of the compressor 101 of the 2nd outlets supercooling heat exchanger 106b the degree of superheat or
The degree of subcooling or compressor for the refrigerant that the outdoor heat exchanger 104 exported to the 2nd supercooling heat exchanger 106b supplies
The discharge temperature of the degree of superheat or compressor 101 of the degree of superheat of 101 suction inlet or the outlet of compressor 101 becomes regulation
Value.
In the 2nd supercooling heat exchanger 106b, the refrigerant of high temperature and the refrigerant of low temperature become parallel stream reason this
Heat transfer property is suppressed.In addition, because be used only the 2nd supercooling heat exchanger 106b, even if it is smaller in heating load and
In the case that circulating mass of refrigerant is less, the compressor 101 for being back to the 2nd outlets supercooling heat exchanger 106b can be also prevented
Suction inlet refrigerant the degree of superheat become it is too much.
Utilizing outdoor swollen by the refrigerant supplied to outdoor heat exchanger 104 after the 2nd supercooling heat exchanger 106b
Swollen mechanism 105 depressurizes as after low temperature, is directed to outdoor heat exchanger 104.It is empty from outside using outdoor heat exchanger 104
The aspiration heat and low-pressure refrigerant gas that evaporates is after by four-way valve 103, and by the 2nd supercooling heat exchanger 106b and is returned
The refrigerant interflow returned, and it is inhaled into compressor 101.At this point, outdoor expansion mechanism 105 is controlled as making outdoor heat exchanger
The degree of superheat of the refrigerant of 104 outlets becomes defined value.
In addition, in present embodiment 1, the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part 108c,
4th switching part 108d, the 5th switching part 108e and the 6th switching part 108f can change opening and closing as shown in Figure 5
Pattern.
For example, in the case of (i) shown in Fig. 5, the 1st switching part 108a, which becomes, to close, and the 2nd switching part 108b becomes
It closing, the 3rd switching part 108c, which becomes, to be opened, and the 4th switching part 108d, which becomes, to be opened, and the 5th switching part 108e, which becomes, to be opened,
6th switching part 108f, which becomes, to be opened.
The state of (i) shown in Fig. 5 becomes the state of the switching mechanism 280 in Fig. 6.At this point, 101 row of compressor will be utilized
The system for going out, being flowed to the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b via outdoor heat exchanger 104
The flowing of cryogen is set as mainstream.In addition, by the flowing of the refrigerant flowed from mainstream in connecting tube 250 in 210 branch of liquid line
It is set as returning to stream.
It can be with parallel connection to the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger in this case, returning to stream
Both 106b flow, mainstream with return stream the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b respectively at
For opposite stream.
Therefore, it is possible to make performance become smaller, and refrigerant crushing can be made to reduce.
As described above, according to the present embodiment, outdoor unit 100 includes：1st supercooling heat exchanger 106a and the 2nd
Supercooling heat exchanger 106b；Pass through the liquid line of the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b
210；The 1st supercooling heat exchanger 106a's and the 2nd supercooling heat exchanger 106b on the basis of refrigerant stream when cooling
By the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b and it is used as pressure from 210 branch of liquid line in downstream
The connecting tube 250 that the compressor suction line 260 of the suction side of contracting machine connects；It is set to the supercooling expansion mechanism of connecting tube 250
107；With for the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b, switch the type of flow of refrigerant
Switching mechanism 280.
Because switching mechanism 280 can be utilized, difference when according to for blowdown firing or when warming operation, or for cold load or
The difference of heating load changes the refrigerant flowed to the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b
The type of flow, therefore, it is possible to which supercooling is effectively performed.
In addition, according to the present embodiment, switching mechanism 280 is handed over the 1st supercooling heat exchanger 106a, the 2nd supercooling heat
The mode that parallel operation 106b becomes serial or parallel connection makes refrigerant flow.
In the case of for example larger for cold load when for blowdown firing as a result, by multiple systems to supercooling heat exchanger
The type of flow of cryogen is set as connecting, and then refrigerant is made to be flowed using a channel, and thereby, it is possible to so that refrigerant flow rates is become
Greatly.In this case, the refrigerant by liquid line becomes opposite stream with the refrigerant by branched pipe therefore heat transfer property improves.
Therefore, in the case of larger for cold load when for blowdown firing the performance of supercooling heat exchanger improve thus exchange heat and increase
Add, so degree of subcooling can be controlled in wide range, can realize that Cooling Performance improves.
In addition, in the case that for example in warming operation, heating load is larger, by multiple systems to supercooling heat exchanger
The type of flow of cryogen is set as in parallel, so that refrigerant is flowed using two channels, refrigerant flow rates become smaller as a result,.In this case,
As parallel stream reason, this heat transfer property is suppressed refrigerant by liquid line with the refrigerant by branched pipe.Therefore, exist
Warming operation and heating load it is larger in the case of supercooling heat exchanger performance be suppressed thus exchange heat reduce, so
Degree of subcooling can be controlled in smaller range, can realize that heating performance improves.
In addition, conditioner according to the present embodiment, which is characterized in that for the 1st supercooling heat exchanger
106a, the 2nd supercooling heat exchanger 106b, switching mechanism 280 use an above-mentioned supercooling according to the type of flow of refrigerant
Heat exchanger using more and switches over.
In the case of for example smaller for cold load when for blowdown firing as a result, it can be set as handing over using a supercooling heat
Parallel operation.In this case, even if can prevent from being back to if in the case where for cold load, smaller and circulating mass of refrigerant is less
The degree of superheat of the refrigerant of the suction inlet of the compressor of cooling heat exchanger outlet becomes too much.For cold load when for blowdown firing
In the case of smaller, even if can prevent from being back to if in the case where for cold load, smaller and circulating mass of refrigerant is less
The degree of superheat of the refrigerant of the suction inlet of the compressor of cooling heat exchanger outlet becomes too much, thereby, it is possible to maintain controlling,
Realize that Cooling Performance improves.
In addition, in the case that for example in warming operation, heating load is smaller, can be set as handing over using a supercooling heat
Parallel operation.In this case, even and if circulating mass of refrigerant less in the case that if smaller in heating load can prevent from being back to
The degree of superheat of the refrigerant of the suction inlet of the compressor of cooling heat exchanger outlet becomes too much.In warming operation and heating load
Heating load is smaller in the case of smaller and circulating mass of refrigerant is less, though in this case if can prevent from being back to
The degree of superheat of the refrigerant of the suction inlet of the compressor of supercooling heat exchanger outlet becomes too much, and thereby, it is possible to maintain to control
Property, it can realize that heating performance improves.
In addition, according to the present embodiment, liquid line 210 abreast has main liquid line 213,211 and of the 1st branch fluid pipe
2nd branch fluid pipe 212, connecting tube 250 abreast there is main connecting tube 253, the 1st branch's connecting tube 251 to be connected with the 2nd branch
Pipe 252.In addition, the 1st supercooling heat exchanger 106a is configured at the 1st branch fluid pipe 211 and the 1st branch's connecting tube 251 passes through
Position, the 2nd supercooling heat exchanger 106b be configured at the 2nd branch fluid pipe 212 and the 2nd branch's connecting tube 252 by position
It sets.Also, as switching mechanism, in the 1st branch fluid pipe 211, in the 1st supercooling heat exchanger 106a and the 2nd supercooling
The upstream of heat exchanger 106b has the 3rd switching part 108c, in main liquid line 213, in the 1st supercooling heat exchanger 106a
Downstream have the 4th switching part 108d, in the 1st branch's connecting tube 251, in the 1st supercooling heat exchanger 106a and the 2nd mistake
The downstream of cooling heat exchanger 106b has the 5th switching part 108e, in main connecting tube 253, in the 1st supercooling heat exchanger
The upstream of 106a has the 6th switching part 108f.
When thereby, it is possible to using switching mechanism 280 according to for blowdown firing or difference when warming operation, or for cold load or
The difference of heating load and change the refrigeration flowed to the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b
The type of flow of agent, therefore, it is possible to which supercooling is effectively performed.
In addition, according to the present embodiment, as multiple supercooling heat exchanges, including the 1st supercooling heat exchanger 106a and
On the basis of refrigerant stream when for blowdown firing, upstream is being leaned on positioned at than the 1st interconnecting piece 221 by 2nd supercooling heat exchanger 106b
Main liquid line 213 have the 1st switching part 108a, positioned at 1st branch more by the upstream than the 1st supercooling heat exchanger 106a
Liquid line 211 has the 3rd switching part 108c, in the main liquid line between the 1st interconnecting piece 221 and the 2nd interconnecting piece 222
213 there is the 4th switching part 108d to be leaned on positioned at than the 3rd interconnecting piece 223 on the basis of the refrigerant stream for flowing through connecting tube 250
The main connecting tube 253 in downstream have the 2nd switching part 108b, positioned at than the 1st supercooling heat exchanger 106a downstream the 1st
Branch's connecting tube 251 has the 5th switching part 108e, in the main connection between the 2nd interconnecting piece 222 and the 3rd interconnecting piece 223
Pipe 253 has the 6th switching part 108f, and switching mechanism 280 is by the 1st switching part 108a, the 2nd switching part 108b, the as a result,
3 switching part 108c, the 4th switching part 108d, the 5th switching part 108e and the 6th switching part 108f are constituted.
When thereby, it is possible to using switching mechanism 280 according to for blowdown firing or difference when warming operation, or for cold load or
The difference of heating load and change the refrigeration flowed to the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b
The type of flow of agent, therefore, it is possible to which supercooling is effectively performed.
According to the present embodiment, in the case of larger for cold load when for blowdown firing, by the 1st supercooling heat exchanger
106a, the 2nd supercooling heat exchanger 106b are configured to connect, and refrigerant becomes to be flowed with a channel, is handed in the 1st supercooling heat
In parallel operation 106a, the 2nd supercooling heat exchanger 106b, the refrigerant of high temperature and the refrigerant of low temperature become opposite stream, and as a result, the
Therefore the performance raising of 1 supercooling heat exchanger 106a, the 2nd supercooling heat exchanger 106b exchange heat and increase, supercooling
Degree can be controlled in wide range, can realize that Cooling Performance improves.
In the case of smaller for cold load when for blowdown firing, be used only the 2nd supercooling heat exchanger 106b, refrigerant at
To be flowed with a channel, in the 2nd supercooling heat exchanger 106b, the refrigerant of high temperature and the refrigerant of low temperature become opposite
Stream, though as a result, in the case where for cold load, smaller and circulating mass of refrigerant is less if can prevent from being back to the 2nd supercooling
But the degree of superheat of the refrigerant of the suction inlet of the compressor 101 of the outlets heat exchanger 106b becomes too much, and thereby, it is possible to maintain to control
Property processed can realize that Cooling Performance improves.
In the case of warming operation and larger heating load, by the 1st supercooling heat exchanger 106a, the 2nd supercooling heat
Exchanger 106b is configured to parallel connection, and refrigerant becomes to be flowed with two channels, in the 1st supercooling heat exchanger 106a, the 2nd supercooling
But in heat exchanger 106b, the refrigerant of high temperature and the refrigerant of low temperature become parallel flowing, can inhibit the 1st supercooling as a result,
Therefore the performance of heat exchanger 106a, the 2nd supercooling heat exchanger 106b exchange heat and reduce, degree of subcooling can be smaller
Range is controlled, and can realize that heating performance improves.
In the case of warming operation and smaller heating load, the 2nd supercooling heat exchanger 106b is used only, in the 2nd mistake
In cooling heat exchanger 106b, the refrigerant of high temperature and the refrigerant of low temperature become parallel flowing, though as a result, heating load compared with
It is small and in the case that circulating mass of refrigerant is less, it can also prevent the compression for being back to the 2nd outlets supercooling heat exchanger 106b
The degree of superheat of the refrigerant of the suction inlet of machine 101 becomes too much, thereby, it is possible to maintain controlling, can realize that heating performance carries
It is high.
In embodiment, to using the 1st supercooling heat exchanger 106a, the 2nd supercooling heat exchanger 106b the case where and
Be illustrated using only the case where the 2nd supercooling heat exchanger 106b, but for example warming operation and heating load it is smaller
In the case of (with reference to Fig. 4), can also set the 1st switching part 108a and be in an open state, and as making to return from indoor unit 300a, 300b
The bypass path that the 2nd supercooling heat exchanger 106b of a part pair of the refrigerant returned is bypassed is achieved in supercooling heat
The refrigerant side pressure loss in exchanger 106b reduces.
In addition, (supercooling is expanded without using the 1st supercooling heat exchanger 106a, the 2nd supercooling heat exchanger 106b
Mechanism 107 is set as full closing state, and refrigerant is not back to the suction inlet of compressor 101) in the case of, by the 1st switching part
108a, the 2nd switching part 108b, the 3rd switching part 108c, the 4th switching part 108d, the 5th switching part 108e, the 6th switching
Component 108f is all set to opening state, by being set as refrigerant with three channel flowings, it can be achieved that refrigerant side pressure is damaged
Losing reduces.
Moreover, check-valves, which is used as switching part, can also realize cost reduction.
In addition, as shown in fig. 7, on the basis of refrigerant stream when for blowdown firing, it is being set to than the 2nd supercooling heat exchange
2nd branch fluid pipe 212 of the positions by the upstream device 106b can further have the 7th switching part 108g.In addition, such as Fig. 7
It is shown, further, on the basis of the refrigerant stream for flowing through connecting tube 250, it can also be set to than the 2nd supercooling heat exchanger
2nd branch's connecting tube 252 of the positions of 106b downstream has the 8th switching part 108h.
In this case, switching mechanism becomes by the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part
108c, the 4th switching part 108d, the 5th switching part 108e, the 6th switching part 108f, the switchings of the 7th switching part 108g and the 8th
Component 108h is constituted.
In addition, the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part 108c possessed by switching mechanism,
4th switching part 108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th switching part
108h also need not can all have.
〇 shown in Fig. 8 indicates that the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part 108c, the 4th are cut
Change component 108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th switching part 108h packets
It includes in the switching mechanism the case where.It is shown in Fig. 8 × to indicate the case where above-mentioned switching part is not included in switching mechanism.
Like this, it is included in the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part of switching mechanism
108c, the 4th switching part 108d, the 5th switching part 108e, the 6th switching part 108f, the switchings of the 7th switching part 108g and the 8th
Component 108h is arranged in what manner, can use pattern shown in Fig. 8.
In addition, the I in figure shown in Fig. 8 becomes the pattern illustrated by embodiment 1.
Below to the III in the II and figure in figure representative in pattern shown in Fig. 8 in embodiment 2, implementation
It is illustrated in mode 3.
(embodiment 2)
Fig. 9 is the figure for the switching mechanism 380 for indicating the II in pattern shown in Fig. 8 in figure.In embodiment 2, just with reality
The attached identical reference numeral of 1 identical structure of mode is applied, and the description thereof will be omitted.
In embodiment 2, switching mechanism 380 includes the 3rd switching part 108c, the 4th switching part 108d, the 5th switching
Component 108e and the 6th switching part 108f.Switching mechanism 380 does not include the 1st switching part 108a, the 2nd switching part 108b, the
7 switching part 108g and the 8th switching part 108h.
In embodiment 2, the 3rd switching part 108c, the 4th switching part 108d, the 5th switching part 108e and the 6th are cut
The pattern of opening and closing can be changed as shown in Figure 10 by changing component 108f.
For example, in the case of (i) shown in Fig. 10, the 3rd switching part 108c, which becomes, to close, the 4th switching part 108d
As closing, the 5th switching part 108e, which becomes, to close, and the 6th switching part 108f, which becomes, to close.
The state of (i) shown in Fig. 10 becomes the state of the switching mechanism 380 in Figure 11.At this point, compressor 101 will be utilized
Discharge is flowed to the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b via outdoor heat exchanger 104
The flowing of refrigerant is set as mainstream.In addition, by the stream of the refrigerant flowed from mainstream in connecting tube 250 in 210 branch of liquid line
It is dynamic to be set as returning to stream.
In this case, mainstream flows through liquid line 210, the 1st branch fluid pipe is flowed through by the 1st supercooling heat exchanger 106a
211, the 2nd branch fluid pipe 212 is flowed through by the 2nd supercooling heat exchanger 106b, again flows through liquid line 210, therefore, with string
Connection flowing.In addition, returning to stream flows through connecting tube 250, the 2nd branch's connecting tube is flowed through by the 2nd supercooling heat exchanger 106b
252, the 1st branch's connecting tube 251 is flowed through by the 1st supercooling heat exchanger 106a, again flows through connecting tube 250, therefore, with string
Connection flowing.This mainstream and return stream are as series connection and as stream relatively.
Therefore, become larger in performance, such as needing more degree of subcooling to be particularly effective (Super long tube) when carrying out cooling.
In addition, for example, in the case of (ii) shown in Fig. 10, the 3rd switching part 108c, which becomes, to be opened, the 4th switching part
Part 108d, which becomes, to close, and the 5th switching part 108e, which becomes, to be opened, and the 6th switching part 108f, which becomes, to close.
The state of (i) shown in Fig. 10 becomes the state of the switching mechanism 380 in Figure 12.
In this case, mainstream and return stream flow only through the 2nd supercooling heat exchanger 106b, it is not passed through the 1st supercooling heat
Exchanger 106a.
Therefore, mainstream becomes opposite stream with stream is returned in the 2nd supercooling heat exchanger 106b, therefore, becomes smaller in performance, example
Such as it is particularly effective in the case of smaller for cold load.
In addition, for example, in the case of (iii) shown in Fig. 10, the 3rd switching part 108c, which becomes, to be opened, the 4th switching part
Part 108d, which becomes, to be opened, and the 5th switching part 108e, which becomes, to close, and the 6th switching part 108f, which becomes, to be opened.
The state of (iii) shown in Fig. 10 becomes the state of switching mechanism 380 in Figure 13.
In this case, mainstream in liquid line 210, pass through the 1st branch fluid pipe 211 of the 1st supercooling heat exchanger 106a
With the 2nd branch fluid pipe 212 3 by the 2nd supercooling heat exchanger 106b with parallel fluid flow.In addition, returning to stream not logical
Cross the 1st branch's connecting tube 251 of the 1st supercooling heat exchanger 106a and the 2nd branch by the 2nd supercooling heat exchanger 106b
Connecting tube 252 flows, and flows only through connecting tube 250.
Mainstream becomes with parallel fluid flow, therefore, it is possible to make refrigerant crushing become smaller as a result,.
In addition, in the case of (iv) for example shown in Fig. 10, the 3rd switching part 108c, which becomes, to be opened, the 4th switching part
108d, which becomes, to be opened, and the 5th switching part 108e, which becomes, to be opened, and the 6th switching part 108f, which becomes, to be opened.
The state of (iii) shown in Fig. 10 becomes the state of the switching mechanism 380 in Figure 14.
In this case, mainstream in liquid line 210, pass through the 1st branch fluid pipe 211 of the 1st supercooling heat exchanger 106a
With the 2nd branch fluid pipe 212 3 by the 2nd supercooling heat exchanger 106b with parallel fluid flow.It is being connected in addition, returning to stream
Pipe 250 by the 1st branch's connecting tube 251 of the 1st supercooling heat exchanger 106a and passes through the 2nd supercooling heat exchanger 106b
252 three of the 2nd branch's connecting tube with parallel fluid flow.
Mainstream becomes opposite stream with stream is returned as a result, therefore, it is possible to make performance become smaller, and refrigerant crushing can be made to subtract
It is small.
(embodiment 3)
Figure 15 is indicated in pattern shown in Fig. 8, the figure of the switching mechanism 480 of the III in figure.It is right in embodiment 3
The attached identical reference numeral of structure same as embodiment 1, the description thereof will be omitted.
In embodiment 3, switching mechanism 480 includes the 3rd switching part 108c, the 4th switching part 108d, the 5th switching
Component 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th switching part 108h.Switching mechanism 380 does not include the
1 switching part 108a, the 2nd switching part 108b.
In embodiment 3, the 3rd switching part 108c, the 4th switching part 108d, the 5th switching part 108e, the 6th switching
Component 108f, the 7th switching part 108g and the 8th switching part 108h can change the pattern of opening and closing as shown in Figure 16.
In the case of (i) shown in Figure 16, the 3rd switching part 108c, which becomes, to be opened, and the 4th switching part 108d, which becomes, to be beaten
It opening, the 5th switching part 108e, which becomes, to be opened, and the 6th switching part 108f, which becomes, to be opened, and the 7th switching part 108g, which becomes, to close, the
8 switching part 108h, which become, to close.
The state of (i) shown in Figure 16 becomes the state of the switching mechanism 480 in Figure 15.At this point, compressor 101 will be utilized
Discharge is flowed to the 1st supercooling heat exchanger 106a and the 2nd supercooling heat exchanger 106b via outdoor heat exchanger 104
The flowing of refrigerant is set as mainstream.In addition, by the stream of the refrigerant flowed from mainstream in connecting tube 250 in 210 branch of liquid line
It is dynamic to be set as returning to stream.
In this case, mainstream is in liquid line 210 and passes through the 1st branch fluid pipe 211 of the 1st supercooling heat exchanger 106a
The two is with parallel fluid flow.It is connected with the 1st branch by the 1st supercooling heat exchanger 106a in connecting tube 250 in addition, returning to stream
Both pipes 251 are with parallel fluid flow.The mainstream and stream is returned in the state of using the 1st supercooling heat exchanger 106a mono-, at
For the two parallel connection and as opposite stream.
Therefore, it is possible to make performance become smaller, refrigerant crushing is made to reduce.
More than, based on present embodiment, the present invention is described, but the present invention is not defined to these embodiments.
It is at most only that the form of the implementation to the present invention carries out example, therefore, it is possible to without departing from the scope of spirit of the present invention
Arbitrarily change and apply.
For example, in embodiment 1 to embodiment 3, the 1st branch fluid pipe 211 and the 1st branch's connecting tube 251 are with equal
It is connected by way of the 1st supercooling heat exchanger 106a.In addition, the 2nd branch fluid pipe 212 and the 2nd branch's connecting tube 252 with
Connected by way of the 2nd supercooling heat exchanger 106b.
As shown in figure 17, the 2nd supercooling heat exchanger 106b is configurable to utilize and flows through liquid line 210 and connect
The mainstream and return stream of take over 250 carry out supercooling.That is, liquid line 210 and connecting tube 250 can also be to pass through the 2nd supercooling
The mode of heat exchanger 106b connects.
In this case, refrigerant stream when the 2nd supercooling heat exchanger 106b is located at in liquid line 210 for blowdown firing is
The upstream of 1st switching part 108a of benchmark, the on the basis of the refrigerant stream for flowing through connecting tube 250 in connecting tube 250 the 2nd
The downstream of switching part 108b.
In this case, the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part 108c, the 4th switching part
108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th switching part 108h constitute switching
Mechanism 580.
In addition, can not also must include the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching in this case
Component 108c, the 4th switching part 108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th
Switching part 108h is whole.
〇 shown in Figure 18 indicates that the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part 108c, the 4th are cut
Change component 108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th switching part 108h packets
It includes in switching mechanism 580.Shown in Figure 18 × indicate them not included in switching mechanism 580.
It is included in the 1st switching part 108a of switching mechanism 580, the 2nd switching part 108b, the 3rd switching part 108c,
4 switching part 108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th switching part
108h is arranged in which way, can use pattern shown in Figure 18.
In addition, for example as shown in figure 19, the 1st supercooling heat exchanger 106a, which is configurable to utilize, flows through liquid line
210 and connecting tube 250 mainstream and return stream carry out supercooling.That is, liquid line 210 and connecting tube 250 can also be to pass through the 2nd
The mode of supercooling heat exchanger 106b connects.
In this case, refrigerant stream when the 1st supercooling heat exchanger 106a is located at in liquid line 210 for blowdown firing is
The upstream of 1st switching part 108a of benchmark, the on the basis of the refrigerant stream for flowing through connecting tube 250 in connecting tube 250 the 2nd
The downstream of switching part 108b.
In this case, the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part 108c, the 4th switching part
108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th switching part 108h constitute switching
Mechanism 680.
In addition, can not also must include the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching in this case
Component 108c, the 4th switching part 108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th
Switching part 108h is whole.
〇 shown in Figure 20 indicates that the 1st switching part 108a, the 2nd switching part 108b, the 3rd switching part 108c, the 4th are cut
Change component 108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th switching part 108h packets
It includes in switching mechanism 680.Shown in Figure 20 × indicate them not included in switching mechanism 680.
It is included in the 1st switching part 108a of switching mechanism 680, the 2nd switching part 108b, the 3rd switching part 108c,
4 switching part 108d, the 5th switching part 108e, the 6th switching part 108f, the 7th switching part 108g and the 8th switching part
108h is arranged in which way, can use pattern shown in Figure 20.
Industrial utilization possibility
The present invention provides the air conditioning in outdoor unit and one or more indoor unit including one or more
In device, the air conditioning dress that performance improves can be realized by suitably controlling the exchange heat of supercooling heat exchanger
It sets.
Claims (5)
1. a kind of conditioner comprising indoor unit and outdoor unit, the conditioner are characterized in that：
The outdoor unit includes：
Multiple supercooling heat exchangers；
Liquid line passes through the supercooling heat exchanger；
Connecting tube is divided in the downstream of the supercooling heat exchanger from the liquid line on the basis of refrigerant stream when cooling
Branch, by the suction side for being connected to compressor after the supercooling heat exchanger；
Supercooling expansion mechanism is set to the connecting tube；With
Switching mechanism, for the type of flow of the more supercooling heat exchanger switching refrigerants.
2. conditioner as described in claim 1, it is characterised in that：
The switching mechanism, switch refrigerant the type of flow make the more supercooling heat exchangers become series connection or at
For parallel connection.
3. conditioner as claimed in claim 1 or 2, it is characterised in that：
The more supercooling heat exchangers are switched to using an institute by the switching mechanism by the type of flow of refrigerant
Supercooling heat exchanger is stated, or uses the more supercooling heat exchangers.
4. conditioner as claimed in claim 1 or 2, it is characterised in that：
The liquid line is abreast provided with main liquid line and branch fluid pipe,
The connecting tube is abreast provided with main connecting tube and branch's connecting tube,
The supercooling heat exchanger arrangement in make any one of the main liquid line and the branch fluid pipe by and
Make any one of the main connecting tube and branch's connecting tube by position,
The switching mechanism has multiple switching parts,
The switching part is at least set to the supercooling heat exchanger in the main liquid line or the branch fluid pipe
Upstream or one of downstream, also, in the main connecting tube and branch's connecting tube, be at least set to the supercooling
One of upstream or downstream of heat exchanger.
5. conditioner as claimed in claim 3, it is characterised in that：
The liquid line is abreast provided with main liquid line and branch fluid pipe,
The connecting tube is abreast provided with main connecting tube and branch's connecting tube,
The supercooling heat exchanger arrangement in make any one of the main liquid line and the branch fluid pipe by and
Make any one of the main connecting tube and branch's connecting tube by position,
The switching mechanism has multiple switching parts,
The switching part is at least set to the supercooling heat exchanger in the main liquid line or the branch fluid pipe
Upstream or one of downstream, also, in the main connecting tube and branch's connecting tube, be at least set to the supercooling
One of upstream or downstream of heat exchanger.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-019656 | 2017-02-06 | ||
| JP2017019656A JP2018128167A (en) | 2017-02-06 | 2017-02-06 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108397825A true CN108397825A (en) | 2018-08-14 |
Family
ID=63095853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810117114.2A Pending CN108397825A (en) | 2017-02-06 | 2018-02-06 | Conditioner |
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| Country | Link |
|---|---|
| JP (1) | JP2018128167A (en) |
| CN (1) | CN108397825A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945430B (en) * | 2019-03-13 | 2020-08-07 | 珠海格力电器股份有限公司 | Operation protection method, device and system for base crane and base crane |
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|---|---|---|---|---|
| WO2012101342A1 (en) * | 2011-01-28 | 2012-08-02 | Peugeot Citroen Automobiles Sa | Heating/air conditioning unit including an external heat exchanger and an external subcooler in order to increase the heating and cooling capacities |
| CN103206748A (en) * | 2013-03-11 | 2013-07-17 | 青岛海尔空调电子有限公司 | Air conditioner dehumidifying system and control method thereof |
| CN203147913U (en) * | 2013-02-04 | 2013-08-21 | 珠海格力电器股份有限公司 | Air conditioner |
| CN103998870A (en) * | 2012-01-18 | 2014-08-20 | 三菱电机株式会社 | Air conditioner |
| JP2016142419A (en) * | 2015-01-30 | 2016-08-08 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Air conditioner and air-conditioning method |
| JP2017146015A (en) * | 2016-02-17 | 2017-08-24 | パナソニックＩｐマネジメント株式会社 | Air conditioner |
-
2017
- 2017-02-06 JP JP2017019656A patent/JP2018128167A/en active Pending
-
2018
- 2018-02-06 CN CN201810117114.2A patent/CN108397825A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012101342A1 (en) * | 2011-01-28 | 2012-08-02 | Peugeot Citroen Automobiles Sa | Heating/air conditioning unit including an external heat exchanger and an external subcooler in order to increase the heating and cooling capacities |
| CN103998870A (en) * | 2012-01-18 | 2014-08-20 | 三菱电机株式会社 | Air conditioner |
| CN203147913U (en) * | 2013-02-04 | 2013-08-21 | 珠海格力电器股份有限公司 | Air conditioner |
| CN103206748A (en) * | 2013-03-11 | 2013-07-17 | 青岛海尔空调电子有限公司 | Air conditioner dehumidifying system and control method thereof |
| JP2016142419A (en) * | 2015-01-30 | 2016-08-08 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Air conditioner and air-conditioning method |
| JP2017146015A (en) * | 2016-02-17 | 2017-08-24 | パナソニックＩｐマネジメント株式会社 | Air conditioner |
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| Publication number | Publication date |
|---|---|
| JP2018128167A (en) | 2018-08-16 |
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