CN103486780A - Vapor-injected multi-connected air conditioning system - Google Patents
Vapor-injected multi-connected air conditioning system Download PDFInfo
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- CN103486780A CN103486780A CN201310420576.9A CN201310420576A CN103486780A CN 103486780 A CN103486780 A CN 103486780A CN 201310420576 A CN201310420576 A CN 201310420576A CN 103486780 A CN103486780 A CN 103486780A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 41
- 239000007788 liquid Substances 0.000 claims description 99
- 239000003507 refrigerant Substances 0.000 claims description 93
- 239000003921 oil Substances 0.000 claims description 47
- 230000001502 supplementing effect Effects 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000002826 coolant Substances 0.000 abstract 3
- 239000012530 fluid Substances 0.000 description 16
- 238000005057 refrigeration Methods 0.000 description 8
- 230000009467 reduction Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004781 supercooling Methods 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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Abstract
The invention discloses a vapor-injected multi-connected air conditioning system. The system comprises an indoor unit, an outdoor unit, a distribution pipe, and a throttle device, wherein the outdoor unit is provided with a first electronic expansion valve capable of changing the operating state of coolant, the indoor unit is connected with the outdoor unit through the distribution pipe and the throttle device disposed on the distribution pipe of the indoor unit is used for changing the operating state of the coolant. Under the refrigerating condition, the first electronic expansion valve is fully open, while the operating state of the coolant is unchanged. The operational reliability of the vapor-injected multi-connected air conditioning system can be improved.
Description
Technical field
The present invention relates to the air conditioner refrigerating control technology, relate in particular to a kind of tonifying Qi and increase the enthalpy multi-connected air conditioning system.
Background technology
In the off-premises station of multi-connected air conditioning system, under the refrigerating operaton state, electric expansion valve is as the throttling arrangement of off-premises station refrigerant Fluid Circulation, by regulating its aperture, can control the refrigerant circulation of off-premises station, thereby controlling the purpose that indoor set is realized temperature and humidity regulation, is work, the living environment of user's Creating Comfort.
In the off-premises station of multi-connected air conditioning system, because the flow of air supply of compressor in the heat exchange flow of indoor set heat exchanger and off-premises station need to be distributed according to the total flow of outdoor heat exchanger, and when the flow proportional distribution is not good, compressor will cause hydraulic performance decline due to the air compensation deficiency, or the overheated exchange capability of heat that causes of heat exchanger reduces.Thereby, need to carry out tonifying Qi to compressor and increase enthalpy, the too much refrigerant that soon part in circulation line can not be evaporated directly draws to be got back in compressor, thereby increase the circulating mass of refrigerant of system, make up to a certain extent the compressor evaporating pressure caused because environment temperature is too low low, the technical problem that ability is low.
Fig. 1 increases enthalpy multi-connected air conditioning system structural representation for existing tonifying Qi.Referring to Fig. 1, this tonifying Qi increases the enthalpy multi-connected air conditioning system and comprises: off-premises station and indoor set, wherein,
Off-premises station comprises: compressor 01, oil eliminator 20, cross valve 12, First Heat Exchanger 02a, the second heat exchanger 02b, the first electric expansion valve 03, plate type heat exchanger 24, reservoir 23, the second electric expansion valve 22 and gas-liquid separator 04,
The exhaust outlet of compressor 01 is connected with the input of oil eliminator 20, and air entry is connected with the output of gas-liquid separator 04, and gas supplementing opening is connected with the output of the second electric expansion valve 22;
The output of oil eliminator 20 is connected with the 3rd end of cross valve 12;
The 4th end of cross valve 12 is connected with the input of First Heat Exchanger 02a, and first end is connected with the input of gas-liquid separator 04, and the second end is connected with the tracheae end of indoor set;
The output of First Heat Exchanger 02a is connected with the input of the first electric expansion valve 03;
The output of the first electric expansion valve 03 is connected with the input of the second heat exchanger 02b;
The output of the second heat exchanger 02b is connected with the input of plate type heat exchanger 24;
The output of plate type heat exchanger 24 is connected with the input of reservoir 23 and the input of the second electric expansion valve 22 respectively;
The output of reservoir 23 is connected with the liquid pipe end of indoor set.
Under cooling condition, the low-temp low-pressure gaseous refrigerant flows into compressor 01, after being compressed, become high temperature and high pressure gaseous refrigerant, flow to oil eliminator 20 by compressor 01, carry out Oil-gas Separation in oil eliminator 20 after, high temperature and high pressure gaseous refrigerant flows into the 3rd end of cross valve, flow into First Heat Exchanger 02a from the 4th end of cross valve, after heat exchange, after flowing into the liquid cold-producing medium of the 03 pair of HTHP of the first electric expansion valve 03, the first electric expansion valve and carrying out throttling, become the low-temp low-pressure two phase refrigerant.This low-temp low-pressure two phase refrigerant pressure is relatively low, via the second heat exchanger 02b, flows into plate type heat exchanger 24, carry out heat exchange in plate type heat exchanger 24 after, from the delivery outlet of plate type heat exchanger 24, flows into reservoir 23;
On the pipeline between plate type heat exchanger 24 and reservoir 23, be provided with the second electric expansion valve 22, but, because low-temp low-pressure two phase refrigerant pressure is relatively low, can't flow into by the second electric expansion valve 22 the tonifying Qi side of compressor.Thereby, all low-temp low-pressure two phase refrigerant flow to reservoir 23, then flow to the liquid pipe end of indoor set, and after indoor set is realized to refrigeration, sequentially the second end of the tracheae end by indoor set, off-premises station cross valve and first end, gas-liquid separator 04 flow into compressor, realize kind of refrigeration cycle.
From above-mentioned, existing tonifying Qi increases the enthalpy multi-connected air conditioning system, usually can only realize carrying out tonifying Qi and increase enthalpy control under heating condition, under cooling condition, after controlling by the throttling of the first electric expansion valve, the liquid cold-producing medium of HTHP becomes the low-temp low-pressure two phase refrigerant, pressure is lower, thereby, less with the pressure reduction at compressor gas supplementing opening place, can not flow into by the second electric expansion valve the gas supplementing opening of compressor.Thereby existing tonifying Qi increases the enthalpy multi-connected air conditioning system can't realize that the tonifying Qi under cooling condition increases enthalpy control, makes compressor to cause hydraulic performance decline due to the air compensation deficiency, affects the normal operation of system, has reduced the system reliability of operation.
Summary of the invention
Embodiments of the invention provide a kind of tonifying Qi to increase the enthalpy multi-connected air conditioning system, improve tonifying Qi and increase enthalpy multi-connected air conditioning system reliability of operation.
For achieving the above object, a kind of tonifying Qi that the embodiment of the present invention provides increases the enthalpy multi-connected air conditioning system, comprises indoor set, disposes the off-premises station of first electric expansion valve that can change the refrigerant running status, connects the pipe arrangement of indoor set and off-premises station,
Described tonifying Qi increases the enthalpy multi-connected air conditioning system and also comprises: be arranged on the indoor set side line, for changing the throttling arrangement of refrigerant running status;
Wherein, under cooling condition, described the first electric expansion valve is not in changing the full-gear of refrigerant running status.
Preferably, described throttling arrangement comprises capillary and electric expansion valve.
Preferably, described off-premises station further comprises: compressor, oil eliminator, cross valve, First Heat Exchanger, the second heat exchanger, plate type heat exchanger, reservoir, the second electric expansion valve and gas-liquid separator;
The exhaust outlet of compressor is connected with the input of oil eliminator, and air entry is connected with the output of gas-liquid separator, and gas supplementing opening is connected with the output of the second electric expansion valve;
The first output of oil eliminator is connected with the 3rd end of cross valve;
The 4th end of cross valve is connected with the input of First Heat Exchanger, and first end is connected with the input of gas-liquid separator, and the second end is connected with the tracheae end of indoor set;
The output of First Heat Exchanger is connected with the input of the first electric expansion valve;
The output of the first electric expansion valve is connected with the input of the second heat exchanger;
The output of the second heat exchanger is connected with the input of plate type heat exchanger;
The output of plate type heat exchanger is connected with the input of reservoir and the input of the second electric expansion valve respectively;
The output of reservoir is connected with an end of throttling arrangement, and the other end of reservoir is connected with the liquid pipe end of indoor set.
Preferably, described plate type heat exchanger further is provided with the second input and the second output, and the second input is connected with the output of described the second electric expansion valve, and the second output is connected with the gas supplementing opening of described compressor.
Preferably, under cooling condition, the low-temp low-pressure gaseous refrigerant flows into compressor from the air entry of compressor, after being compressed, becomes high temperature and high pressure gaseous refrigerant, exhaust outlet by compressor flows to oil eliminator, carry out Oil-gas Separation in oil eliminator after, high temperature and high pressure gaseous refrigerant flows into the 3rd end of cross valve by the first delivery outlet of oil eliminator, from the 4th end of cross valve, flows into First Heat Exchanger, after heat exchange, flow into the first electric expansion valve;
The liquid cold-producing medium of the HTHP flowed out from the first electric expansion valve, flow into the second heat exchanger, after heat exchange, flow into plate type heat exchanger, carry out heat exchange in plate type heat exchanger after, from the output of plate type heat exchanger, flow out the liquid cold-producing medium of HTHP, be divided into two parts;
The liquid cold-producing medium of part HTHP flows into the second electric expansion valve, and after the second electric expansion valve throttling, become in low temperature and press two phase refrigerant, flow into plate type heat exchanger from the second input of plate type heat exchanger, the liquid cold-producing medium of HTHP in plate type heat exchanger is carried out to heat exchange, the second output output from plate type heat exchanger, become the medium temperature and medium pressure gaseous refrigerant with the degree of superheat, by the gas supplementing opening inflow compressor of compressor;
The liquid refrigerant flow direction reservoir of another part HTHP, output by reservoir flows into capillary, the liquid cold-producing medium of HTHP is after capillary-compensated, become the low-temp low-pressure two phase refrigerant, flow into the liquid pipe end of indoor set, carry out heat exchange in indoor set after, become the low-temp low-pressure gaseous refrigerant, by the tracheae end of indoor set, flowed out, and the second end of the cross valve of sequentially flowing through and first end, gas-liquid separator, finally the air entry by compressor is back in compressor.
Preferably, under heating condition, the low-temp low-pressure gaseous refrigerant flows into compressor from the air entry of compressor, after being compressed, become high temperature and high pressure gaseous refrigerant, exhaust outlet by compressor flows to oil eliminator, liquid lubricating oil is separated from high temperature and high pressure gaseous refrigerant, high temperature and high pressure gaseous refrigerant flows into the 3rd end of cross valve by the first delivery outlet of oil eliminator, from the second end of cross valve, flow out, tracheae end by indoor set flows into indoor set, after indoor set carries out heat exchange, become the liquid cold-producing medium of HTHP, flow into the capillary in full-gear from the liquid pipe end of indoor set, and enter the reservoir of off-premises station through capillary flow,
The liquid cold-producing medium of the HTHP flowed out from reservoir is divided into two-way:
The liquid cold-producing medium of the HTHP of main road flows into plate type heat exchanger, after the heat exchange of plate type heat exchanger, flow to the second heat exchanger, and, after the first electric expansion valve carries out throttling, become the low-temp low-pressure two phase refrigerant, flow to First Heat Exchanger, after heat exchange, become the low-temp low-pressure gaseous refrigerant, and the 4th end of the cross valve of sequentially flowing through and first end, gas-liquid separator, finally the air entry by compressor is back in compressor;
The liquid cold-producing medium of the HTHP of bypass flows into the second electric expansion valve, after the second electric expansion valve throttling, become in low temperature and press two phase refrigerant, flow into plate type heat exchanger from the second input of plate type heat exchanger, to the liquid cold-producing medium of the HTHP of main road in plate type heat exchanger, carried out cold, the second output output from plate type heat exchanger, become the medium temperature and medium pressure gaseous refrigerant with the degree of superheat, by the gas supplementing opening inflow compressor of compressor.
Preferably, described compressor adopts inverter scroll compressor.
Preferably, described off-premises station further comprises the second capillary and the first magnetic valve, wherein,
Second end capillaceous is connected with the first output of oil eliminator, and the other end is connected with an end of the first magnetic valve, and the other end of the first magnetic valve is connected with the input of gas-liquid separator.
Preferably, the bottom of described oil eliminator further is provided with the second output, and described off-premises station further comprises: the 5th filter, the second magnetic valve and three capillary, wherein,
The second output of oil eliminator is connected with an end of the 5th filter, the other end of the 5th filter is connected with an end of the second magnetic valve, the other end of the second magnetic valve is connected with an end of three capillary, and the other end of three capillary is connected with the air entry of compressor.
Preferably, described off-premises station further comprises: the first filter, the second filter and current divider, wherein,
One end of current divider is connected with the output of First Heat Exchanger, and the other end is connected with an end of the first filter;
The other end of the first filter is connected with the input of the first electric expansion valve;
One end of the second filter is connected with the output of the first electric expansion valve, and the other end is connected with the input of the second heat exchanger.
Preferably, described off-premises station further comprises: the 3rd filter, detection tabs, check valve and pressure switch, wherein,
One end of the 3rd filter is connected with the output of gas-liquid separator, and the other end is connected with the air entry of compressor;
Detection tabs is arranged on the pipeline between the input of the 4th end of cross valve and First Heat Exchanger;
The input of check valve is connected with the first output of oil eliminator, and output is connected with the 3rd end of cross valve;
Pressure switch is arranged on the pipeline between the input of the first output of oil eliminator and check valve.
Preferably, described off-premises station further comprises: high-pressure sensor, low-pressure sensor, liquid side stop valve, gas side stop valve and the 4th filter, wherein,
The high-pressure installation of sensors is on the pipeline between the 3rd end of the output of check valve and cross valve;
Low-pressure sensor is arranged on the pipeline between the other end of the air entry of compressor and the 3rd filter;
One end of liquid side stop valve is connected with the output of reservoir, and the other end is connected with input capillaceous;
One end of gas side stop valve is connected with the second end of cross valve, and the other end is connected with the tracheae end of indoor set;
One end of the 4th filter is connected with the first output of plate type heat exchanger, and the other end is connected with the input of the second electric expansion valve.
As seen from the above technical solution, a kind of tonifying Qi that the embodiment of the present invention provides increases the enthalpy multi-connected air conditioning system, by between the liquid pipe end at reservoir and indoor set, throttling arrangement being set, under cooling condition, the first electric expansion valve is set in full-gear, thereby can be so that when the refrigerant fluid flow to the second electric expansion valve, can be so that a part of refrigerant fluid be after the second electric expansion valve carries out throttling, the refrigerant fluid pressure is greater than compressor gas supplementing opening pressure, thereby under the effect of pressure reduction, realize increasing enthalpy-controlled purpose to the compressor tonifying Qi, ensured the air compensation of compressor under cooling condition, promoted the refrigerating capacity of compressor, improve tonifying Qi and increased enthalpy multi-connected air conditioning system reliability of operation.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described.Apparently, the accompanying drawing in below describing is only some embodiments of the present invention, for those of ordinary skills, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 increases enthalpy multi-connected air conditioning system structural representation for existing tonifying Qi.
Fig. 2 is that embodiment of the present invention tonifying Qi increases enthalpy multi-connected air conditioning system structural representation.
The specific embodiment
Below with reference to accompanying drawing, the technical scheme of various embodiments of the present invention is carried out to clear, complete description, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, all belong to the scope that the present invention protects.
Existing tonifying Qi increases the enthalpy multi-connected air conditioning system, under cooling condition, after controlling by the throttling of the first electric expansion valve due to the liquid cold-producing medium of HTHP, become the low-temp low-pressure two phase refrigerant, pressure is lower, thereby, less with the pressure reduction at compressor gas supplementing opening place, can not realize that the tonifying Qi of compressor increases enthalpy by the gas supplementing opening of the second electric expansion valve inflow compressor, reduce tonifying Qi and increased enthalpy multi-connected air conditioning system reliability of operation.
In the embodiment of the present invention, for the tonifying Qi that ensures cooling condition lower compression machine increases enthalpy, control, consider that it is full-gear that the first electric expansion valve is set, and the refrigerant fluid of flowing through is not carried out to throttling control when cooling condition.Like this, the liquid cold-producing medium of HTHP is by after the first electric expansion valve, still be the liquid cold-producing medium of HTHP, thereby pressure is higher, larger with the pressure reduction at compressor gas supplementing opening place, under differential pressure action, can flow into smoothly the gas supplementing opening of compressor by the second electric expansion valve, realize that the tonifying Qi of compressor increases enthalpy, thereby improve tonifying Qi, increase enthalpy multi-connected air conditioning system reliability of operation; Simultaneously, can realize the refrigeration at indoor set in order to ensure the liquid cold-producing medium of the HTHP that flows into indoor set, by capillary or the 3rd electric expansion valve are set between the liquid pipe end at reservoir and indoor set, for the liquid cold-producing medium of HTHP is carried out to throttling, thereby change the running status of the liquid cold-producing medium of HTHP, and become the low-temp low-pressure two phase refrigerant, thereby can realize the refrigeration to indoor set.
Fig. 2 is that embodiment of the present invention tonifying Qi increases enthalpy multi-connected air conditioning system structural representation.Referring to Fig. 2, this tonifying Qi increases the enthalpy multi-connected air conditioning system and comprises: indoor set, dispose the off-premises station of first electric expansion valve 03 that can change the refrigerant running status, connect the pipe arrangement of indoor set and off-premises station, this tonifying Qi increases the enthalpy multi-connected air conditioning system and also comprises: be arranged on the indoor set side line, for changing the throttling arrangement of refrigerant running status;
Wherein, under cooling condition, described the first electric expansion valve is not in changing the full-gear of refrigerant running status.
Preferably, throttling arrangement can be capillary, can be also electric expansion valve, can also be other components and parts that can realize throttling.Pipe arrangement comprises tracheae and liquid pipe.
In the embodiment of the present invention, under cooling condition, the first electric expansion valve is set in full-gear, make the refrigerant fluid after the first electric expansion valve, the refrigerant running status does not change, thereby realize that the refrigerant fluid pressure is greater than compressor gas supplementing opening pressure, make the refrigerant fluid realize increasing enthalpy-controlled purpose to the compressor tonifying Qi under the effect of pressure reduction, ensured the air compensation of compressor under cooling condition, and by being arranged on the indoor set side line, for the throttling arrangement that changes the refrigerant running status, the refrigerant of processing without the first electric expansion valve throttling is carried out to throttling, thereby the required change to refrigerant fluid running status while completing refrigeration, the refrigerant fluid of guarantee inflow indoor set can be realized the heat exchange with indoor set, thereby realize that when refrigeration carrying out tonifying Qi to compressor increases enthalpy.
Specifically,
Tonifying Qi increases the enthalpy multi-connected air conditioning system and comprises: off-premises station and indoor set, wherein,
Off-premises station comprises: compressor 01, oil eliminator 20, cross valve 12, First Heat Exchanger 02a, the second heat exchanger 02b, the first electric expansion valve 03, plate type heat exchanger 24, reservoir 23, the second electric expansion valve 22, capillary 26 and gas-liquid separator 04;
The exhaust outlet of compressor 01 is connected with the input of oil eliminator 20, and air entry is connected with the output of gas-liquid separator 04, and gas supplementing opening is connected with the output of the second electric expansion valve 22;
The first output of oil eliminator 20 is connected with the 3rd end of cross valve 12;
The 4th end of cross valve 12 is connected with the input of First Heat Exchanger 02a, and first end is connected with the input of gas-liquid separator 04, and the second end is connected with the tracheae end of indoor set;
The output of First Heat Exchanger 02a is connected with the input of the first electric expansion valve 03;
The output of the first electric expansion valve 03 is connected with the input of the second heat exchanger 02b;
The output of the second heat exchanger 02b is connected with the input of plate type heat exchanger 24;
The output of plate type heat exchanger 24 is connected with the input of reservoir 23 and the input of the second electric expansion valve 22 respectively;
The output of reservoir 23 is connected with an end of capillary 26, and the other end of capillary 26 is connected with the liquid pipe end of indoor set;
Preferably, capillary 26 is arranged on indoor pusher side, between the liquid pipe end of the output of reservoir 23 and indoor set.
Preferably, also be provided with the second input and the second output in plate type heat exchanger 24, the second input is connected with the output of the second electric expansion valve 22, and the second output is connected with the gas supplementing opening of compressor 01.
Preferably, compressor adopts inverter scroll compressor.
In the embodiment of the present invention, under cooling condition, the first electric expansion valve 03 is in full-gear:
The low-temp low-pressure gaseous refrigerant flows into compressor 01 from the air entry of compressor 01, after being compressed, become high temperature and high pressure gaseous refrigerant, exhaust outlet by compressor 01 flows to oil eliminator 20, carry out Oil-gas Separation in oil eliminator 20 after, high temperature and high pressure gaseous refrigerant flows into the 3rd end of cross valve 12 by the first delivery outlet of oil eliminator 20, flow into First Heat Exchanger 02a from the 4th end (the 3rd end is communicated with the 4th end) of cross valve 12, after heat exchange, flow into the first electric expansion valve 03;
Flow into the liquid cold-producing medium of HTHP of the first electric expansion valve 03, while flowing out from the first electric expansion valve 03, state does not change, or the liquid cold-producing medium of HTHP, flow into the second heat exchanger 02b, after heat exchange, flow into plate type heat exchanger 24, carry out heat exchange in plate type heat exchanger 24 after, state does not change yet, or the liquid cold-producing medium of HTHP, from the delivery outlet of plate type heat exchanger 24, flows out;
On the pipeline between plate type heat exchanger 24 and reservoir 23, also be provided with the second electric expansion valve 22, and because the liquid refrigerant pressure of the HTHP flowed out from plate type heat exchanger 24 is relatively high, thereby, the liquid cold-producing medium of the HTHP flowed out from the delivery outlet of plate type heat exchanger 24, be divided into two parts, the liquid cold-producing medium of part HTHP flows into the second electric expansion valve 22, and after the second electric expansion valve 22 throttlings, become in low temperature and press two phase refrigerant, flow into plate type heat exchanger 24 from the second input of plate type heat exchanger 24, the liquid cold-producing medium of the HTHP of main road in plate type heat exchanger 24 is carried out to heat exchange, the second output output from plate type heat exchanger 24, become the medium temperature and medium pressure gaseous refrigerant with the degree of superheat, gas supplementing opening by compressor 01 flows into compressor, thereby compressor 01 is carried out to tonifying Qi and increase enthalpy, the liquid refrigerant flow direction reservoir 23 of another part HTHP, output by reservoir 23 flows into capillary 26,
The liquid cold-producing medium of HTHP is after capillary 26 throttlings, become the low-temp low-pressure two phase refrigerant, flow into the liquid pipe end of indoor set, carry out heat exchange in indoor set after, become the low-temp low-pressure gaseous refrigerant, by the tracheae end of indoor set, flowed out, and the second end of the cross valve 12 of sequentially flowing through and first end, gas-liquid separator 04, finally the air entry by compressor 01 is back in compressor 01.
Under heating condition:
The low-temp low-pressure gaseous refrigerant flows into compressor 01 from the air entry of compressor 01, after being compressed, become high temperature and high pressure gaseous refrigerant, exhaust outlet by compressor 01 flows to oil eliminator 20, carry out Oil-gas Separation in oil eliminator 20, liquid lubricating oil is separated from high temperature and high pressure gaseous refrigerant, high temperature and high pressure gaseous refrigerant flows into the 3rd end of cross valve 12 by the first delivery outlet of oil eliminator 20, from second end (the 3rd end is communicated with the second end) of cross valve 12, flow out, tracheae end by indoor set flows into indoor set, after indoor set carries out heat exchange, become the liquid cold-producing medium of HTHP, flow into capillary 26(or the 3rd electric expansion valve from the liquid pipe end of indoor set), capillary 26 is in full-gear (or the 3rd electric expansion valve is in full-gear), and flow into the reservoir 23 of off-premises stations through capillary 26,
The liquid cold-producing medium of the HTHP flowed out from reservoir 23 is divided into two-way:
The liquid cold-producing medium of the HTHP of main road flows into plate type heat exchanger 24, after the heat exchange (excessively cold) of plate type heat exchanger 24, flow to the second heat exchanger 02b, and, after the first electric expansion valve 03 carries out throttling, become the low-temp low-pressure two phase refrigerant, flow to First Heat Exchanger 02a, after heat exchange, become the low-temp low-pressure gaseous refrigerant, and the 4th end of the cross valve 12 of sequentially flowing through and first end, gas-liquid separator 04, finally the air entry by compressor 01 is back in compressor 01;
The liquid cold-producing medium of the HTHP of bypass flows into the second electric expansion valve, after the second electric expansion valve 22 throttlings, become in low temperature and press two phase refrigerant, flow into plate type heat exchanger 24 from the second input of plate type heat exchanger 24, to the liquid cold-producing medium of the HTHP of main road in plate type heat exchanger 24, carried out cold, the second output output from plate type heat exchanger 24, become the medium temperature and medium pressure gaseous refrigerant with the degree of superheat, by the gas supplementing opening inflow compressor 01 of compressor 01.Thereby reached cold main road cold-producing medium, and carried out tonifying Qi simultaneously and increase enthalpy-controlled purpose.
About cold-producing medium heat or cooling condition under circulation process, also can, referring to the correlation technique document, at this, omit detailed description.
About controlling the tonifying Qi of refrigerant fluid to the air compensation in compressor, control the aperture of the first electric expansion valve, the second electric expansion valve, and design capillaceous, can increase enthalpy multi-connected air conditioning system actual operation parameters according to tonifying Qi and be determined, for known technology, at this, omit detailed description.
From above-mentioned, the tonifying Qi of the embodiment of the present invention increases the enthalpy multi-connected air conditioning system, by capillary or the 3rd electric expansion valve are set between the liquid pipe end at reservoir and indoor set, under cooling condition, the first electric expansion valve is set in full-gear, thereby can be so that when the refrigerant fluid flow to the second electric expansion valve, can be so that a part of refrigerant fluid be after the second electric expansion valve carries out throttling, the refrigerant fluid pressure is greater than compressor gas supplementing opening pressure, thereby realize that under the effect of pressure reduction tonifying Qi increases enthalpy and controls, improve tonifying Qi and increased enthalpy multi-connected air conditioning system reliability of operation, simultaneously, when the liquid cold-producing medium refrigerant of another part HTHP fluid is flowed through capillary between the liquid pipe end that is arranged on reservoir and indoor set or the 3rd electric expansion valve, throttling action by capillary or the 3rd electric expansion valve, change the running status of the liquid cold-producing medium of HTHP, and become the low-temp low-pressure two phase refrigerant, thereby can realize the refrigeration to indoor set, thereby when refrigeration, utilize tonifying Qi to increase enthalpy, promote degree of supercooling, improve the refrigerating capacity of system.Further, adopt capillary to carry out throttling control, while in the refrigerant fluid capillaceous of flowing through, containing larger bubble, capillary can split into minute bubbles by larger bubble, can effectively prevent when air pocket from breaking the refrigerant flow noise caused, thereby reduce operating noise.That is to say, the tonifying Qi of the embodiment of the present invention increases the enthalpy multi-connected air conditioning system, no matter under heating condition or under cooling condition, all can utilize tonifying Qi to increase enthalpy and control and accurately improve system capability (heating capacity or refrigerating capacity), efficiency, and cost is low and can reduce the noise that refrigerant flows and produces.
In practical application, off-premises station can be one or more, and indoor set can be also one or more.
Preferably, off-premises station can also comprise with lower a kind of or its any combination: the first filter 05a, the second filter 05b, the 3rd filter 06, current divider 07, detection tabs 08, pressure switch 11, high-pressure sensor 13, low-pressure sensor 14, liquid side stop valve 15, gas side stop valve 16, check valve 21 and the 4th filter 25, wherein
One end of current divider 07 is connected with the output of First Heat Exchanger 02a, and the other end is connected with the end of the first filter 05a;
The other end of the first filter 05a is connected with the input of the first electric expansion valve 03;
The end of the second filter 05b is connected with the output of the first electric expansion valve 03, and the other end is connected with the input of the second heat exchanger 02b;
One end of the 3rd filter 06 is connected with the output of gas-liquid separator 04, and the other end is connected with the air entry of compressor 01;
The input of check valve 21 is connected with the first output of oil eliminator 20, and output is connected with the 3rd end of cross valve 12;
High-pressure sensor 13 is arranged on the pipeline between the 3rd end of the output of check valve 21 and cross valve 12;
Low-pressure sensor 14 is arranged on the pipeline between the other end of the air entry of compressor 01 and the 3rd filter 06;
Liquid side stop valve 15 1 ends are connected with the output of reservoir 23, and the other end is connected with the input of capillary 26;
Gas side stop valve 16 1 ends are connected with the second end of cross valve 12, and the other end is connected with the tracheae end of indoor set;
One end of the 4th filter 25 is connected with the first output of plate type heat exchanger, and the other end is connected with the input of the second electric expansion valve 22.
Structure and function about the first filter 05a, the second filter 05b, the 3rd filter 06, current divider 07, detection tabs 08, pressure switch 11, high-pressure sensor 13, low-pressure sensor 14, liquid side stop valve 15, gas side stop valve 16, check valve 21 and the 4th filter 25 are known technology, at this, omit detailed description.
Certainly, in practical application, off-premises station can further include the second capillary 09 and the first magnetic valve 10, wherein,
One end of the second capillary 09 is connected with the first output of oil eliminator 20, and the other end is connected with an end of the first magnetic valve 10, and the other end of the first magnetic valve 10 is connected with the input of gas-liquid separator 04.
In the embodiment of the present invention, the bypass line that comprises the second capillary 09 and the first magnetic valve 10 by setting, can be so that the sub-fraction cold-producing medium in the cold-producing medium flowed out from oil eliminator 20, be back to gas-liquid separator 04 by bypass line, after gas-liquid separation, from compressor 01 air entry, be back in compressor.
Preferably, the bottom of oil eliminator 20 also is provided with the second output, and off-premises station can further include: the 5th filter 17, the second magnetic valve 18 and three capillary 19, wherein,
The second output of oil eliminator 20 is connected with an end of the 5th filter 17, the other end of the 5th filter 17 is connected with an end of the second magnetic valve 18, the other end of the second magnetic valve 18 is connected with an end of three capillary 19, and the other end of three capillary 19 is connected with compressor 01 air entry.
In the embodiment of the present invention, comprise the 5th filter 17 by setting, the return line of the second magnetic valve 18 and three capillary 19, can be so that after the cold-producing medium that contains liquid lubricating oil be separated in oil eliminator 20, isolated liquid lubricating oil is deposited on the bottom of oil eliminator 20, and by the second output of oil eliminator 20, the 5th filter 17 of sequentially flowing through, the second magnetic valve 18 and three capillary 19, and be back in compressor 01 from the air entry of compressor 01, thereby guarantee the lubricants capacity in compressor 01, avoid compressor because the loss of lubricating oil causes frictional heat, affect compressor performance.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if of the present invention these are revised and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also comprises these changes and modification interior.
Claims (10)
1. a tonifying Qi increases the enthalpy multi-connected air conditioning system, comprising: indoor set, dispose the off-premises station of first electric expansion valve that can change the refrigerant running status, and connect the pipe arrangement of indoor set and off-premises station, it is characterized in that,
Described tonifying Qi increases the enthalpy multi-connected air conditioning system and also comprises: be arranged on the indoor set side line, for changing the throttling arrangement of refrigerant running status;
Wherein, under cooling condition, described the first electric expansion valve is not in changing the full-gear of refrigerant running status.
2. tonifying Qi according to claim 1 increases the enthalpy multi-connected air conditioning system, it is characterized in that, described throttling arrangement comprises capillary and electric expansion valve.
3. tonifying Qi according to claim 2 increases the enthalpy multi-connected air conditioning system, it is characterized in that, described off-premises station further comprises: compressor, oil eliminator, cross valve, First Heat Exchanger, the second heat exchanger, plate type heat exchanger, reservoir, the second electric expansion valve and gas-liquid separator;
The exhaust outlet of compressor is connected with the input of oil eliminator, and air entry is connected with the output of gas-liquid separator, and gas supplementing opening is connected with the output of the second electric expansion valve;
The first output of oil eliminator is connected with the 3rd end of cross valve;
The 4th end of cross valve is connected with the input of First Heat Exchanger, and first end is connected with the input of gas-liquid separator, and the second end is connected with the tracheae end of indoor set;
The output of First Heat Exchanger is connected with the input of the first electric expansion valve;
The output of the first electric expansion valve is connected with the input of the second heat exchanger;
The output of the second heat exchanger is connected with the input of plate type heat exchanger;
The output of plate type heat exchanger is connected with the input of reservoir and the input of the second electric expansion valve respectively;
The output of reservoir is connected with an end of throttling arrangement, and the other end of reservoir is connected with the liquid pipe end of indoor set.
4. tonifying Qi according to claim 3 increases the enthalpy multi-connected air conditioning system, it is characterized in that, described plate type heat exchanger further is provided with the second input and the second output, the second input is connected with the output of described the second electric expansion valve, and the second output is connected with the gas supplementing opening of described compressor.
5. tonifying Qi according to claim 4 increases the enthalpy multi-connected air conditioning system, it is characterized in that,
Under cooling condition, the low-temp low-pressure gaseous refrigerant flows into compressor from the air entry of compressor, after being compressed, become high temperature and high pressure gaseous refrigerant, the exhaust outlet by compressor flows to oil eliminator, carry out Oil-gas Separation in oil eliminator after, high temperature and high pressure gaseous refrigerant flows into the 3rd end of cross valve by the first delivery outlet of oil eliminator, flow into First Heat Exchanger from the 4th end of cross valve, after heat exchange, flow into the first electric expansion valve;
The liquid cold-producing medium of the HTHP flowed out from the first electric expansion valve, flow into the second heat exchanger, after heat exchange, flow into plate type heat exchanger, carry out heat exchange in plate type heat exchanger after, from the output of plate type heat exchanger, flow out the liquid cold-producing medium of HTHP, be divided into two parts;
The liquid cold-producing medium of part HTHP flows into the second electric expansion valve, and after the second electric expansion valve throttling, become in low temperature and press two phase refrigerant, flow into plate type heat exchanger from the second input of plate type heat exchanger, the liquid cold-producing medium of HTHP in plate type heat exchanger is carried out to heat exchange, the second output output from plate type heat exchanger, become the medium temperature and medium pressure gaseous refrigerant with the degree of superheat, by the gas supplementing opening inflow compressor of compressor;
The liquid refrigerant flow direction reservoir of another part HTHP, output by reservoir flows into capillary, the liquid cold-producing medium of HTHP is after capillary-compensated, become the low-temp low-pressure two phase refrigerant, flow into the liquid pipe end of indoor set, carry out heat exchange in indoor set after, become the low-temp low-pressure gaseous refrigerant, by the tracheae end of indoor set, flowed out, and the second end of the cross valve of sequentially flowing through and first end, gas-liquid separator, finally the air entry by compressor is back in compressor.
6. tonifying Qi according to claim 4 increases the enthalpy multi-connected air conditioning system, it is characterized in that,
Under heating condition, the low-temp low-pressure gaseous refrigerant flows into compressor from the air entry of compressor, after being compressed, become high temperature and high pressure gaseous refrigerant, exhaust outlet by compressor flows to oil eliminator, liquid lubricating oil is separated from high temperature and high pressure gaseous refrigerant, high temperature and high pressure gaseous refrigerant flows into the 3rd end of cross valve by the first delivery outlet of oil eliminator, from the second end of cross valve, flow out, tracheae end by indoor set flows into indoor set, after indoor set carries out heat exchange, become the liquid cold-producing medium of HTHP, flow into the capillary in full-gear from the liquid pipe end of indoor set, and enter the reservoir of off-premises station through capillary flow,
The liquid cold-producing medium of the HTHP flowed out from reservoir is divided into two-way:
The liquid cold-producing medium of the HTHP of main road flows into plate type heat exchanger, after the heat exchange of plate type heat exchanger, flow to the second heat exchanger, and, after the first electric expansion valve carries out throttling, become the low-temp low-pressure two phase refrigerant, flow to First Heat Exchanger, after heat exchange, become the low-temp low-pressure gaseous refrigerant, and the 4th end of the cross valve of sequentially flowing through and first end, gas-liquid separator, finally the air entry by compressor is back in compressor;
The liquid cold-producing medium of the HTHP of bypass flows into the second electric expansion valve, after the second electric expansion valve throttling, become in low temperature and press two phase refrigerant, flow into plate type heat exchanger from the second input of plate type heat exchanger, to the liquid cold-producing medium of the HTHP of main road in plate type heat exchanger, carried out cold, the second output output from plate type heat exchanger, become the medium temperature and medium pressure gaseous refrigerant with the degree of superheat, by the gas supplementing opening inflow compressor of compressor.
7. according to claim 1 to 6 any one, described tonifying Qi increases the enthalpy multi-connected air conditioning system, it is characterized in that, described compressor adopts inverter scroll compressor.
8. tonifying Qi according to claim 7 increases the enthalpy multi-connected air conditioning system, it is characterized in that, described off-premises station further comprises the second capillary and the first magnetic valve, wherein,
Second end capillaceous is connected with the first output of oil eliminator, and the other end is connected with an end of the first magnetic valve, and the other end of the first magnetic valve is connected with the input of gas-liquid separator.
9. tonifying Qi according to claim 7 increases the enthalpy multi-connected air conditioning system, it is characterized in that, the bottom of described oil eliminator further is provided with the second output, and described off-premises station further comprises: the 5th filter, the second magnetic valve and three capillary, wherein
The second output of oil eliminator is connected with an end of the 5th filter, the other end of the 5th filter is connected with an end of the second magnetic valve, the other end of the second magnetic valve is connected with an end of three capillary, and the other end of three capillary is connected with the air entry of compressor.
10. tonifying Qi according to claim 7 increases the enthalpy multi-connected air conditioning system, it is characterized in that, described off-premises station further comprises: the first filter, the second filter and current divider, wherein,
One end of current divider is connected with the output of First Heat Exchanger, and the other end is connected with an end of the first filter;
The other end of the first filter is connected with the input of the first electric expansion valve;
One end of the second filter is connected with the output of the first electric expansion valve, and the other end is connected with the input of the second heat exchanger.
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|---|---|---|---|---|
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000186863A (en) * | 1998-12-22 | 2000-07-04 | Mitsubishi Electric Corp | Freezing air conditioning apparatus using combustible refrigerant |
| CN2401854Y (en) * | 1999-11-05 | 2000-10-18 | 海尔集团公司 | Easy continuous starting air conditioner |
| JP2001201191A (en) * | 2000-01-24 | 2001-07-27 | Mitsubishi Electric Corp | Air-conditioning system |
| EP1647783A2 (en) * | 2004-10-18 | 2006-04-19 | Mitsubishi Denki Kabushiki Kaisha | Refrigeration/air conditioning equipment |
| CN201025417Y (en) * | 2007-01-25 | 2008-02-20 | 广州万宝集团有限公司 | An air-conditioning heat pump device suitable for operating in a low-temperature environment |
| CN201233124Y (en) * | 2008-06-30 | 2009-05-06 | 青岛海信日立空调系统有限公司 | Novel air conditioner circulating system |
| JP2012117708A (en) * | 2010-11-30 | 2012-06-21 | Fujitsu General Ltd | Air conditioner |
| CN102759223A (en) * | 2011-04-28 | 2012-10-31 | 青岛海信日立空调系统有限公司 | Oil balancing control system of air conditioning unit |
| CN202613591U (en) * | 2012-04-28 | 2012-12-19 | 青岛海信日立空调系统有限公司 | Circulating system for air conditioner |
| CN103162475A (en) * | 2013-03-22 | 2013-06-19 | 青岛海信日立空调系统有限公司 | Heat dissipation circulating system of air conditioner |
-
2013
- 2013-09-13 CN CN201310420576.9A patent/CN103486780A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000186863A (en) * | 1998-12-22 | 2000-07-04 | Mitsubishi Electric Corp | Freezing air conditioning apparatus using combustible refrigerant |
| CN2401854Y (en) * | 1999-11-05 | 2000-10-18 | 海尔集团公司 | Easy continuous starting air conditioner |
| JP2001201191A (en) * | 2000-01-24 | 2001-07-27 | Mitsubishi Electric Corp | Air-conditioning system |
| EP1647783A2 (en) * | 2004-10-18 | 2006-04-19 | Mitsubishi Denki Kabushiki Kaisha | Refrigeration/air conditioning equipment |
| CN201025417Y (en) * | 2007-01-25 | 2008-02-20 | 广州万宝集团有限公司 | An air-conditioning heat pump device suitable for operating in a low-temperature environment |
| CN201233124Y (en) * | 2008-06-30 | 2009-05-06 | 青岛海信日立空调系统有限公司 | Novel air conditioner circulating system |
| JP2012117708A (en) * | 2010-11-30 | 2012-06-21 | Fujitsu General Ltd | Air conditioner |
| CN102759223A (en) * | 2011-04-28 | 2012-10-31 | 青岛海信日立空调系统有限公司 | Oil balancing control system of air conditioning unit |
| CN202613591U (en) * | 2012-04-28 | 2012-12-19 | 青岛海信日立空调系统有限公司 | Circulating system for air conditioner |
| CN103162475A (en) * | 2013-03-22 | 2013-06-19 | 青岛海信日立空调系统有限公司 | Heat dissipation circulating system of air conditioner |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588365A (en) * | 2015-06-30 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Intense heat type outdoor unit, heat pump system and control method of intense heat type outdoor unit and heat pump system |
| CN105588365B (en) * | 2015-06-30 | 2018-11-30 | 青岛海信日立空调系统有限公司 | A kind of heat-flash type outdoor unit, heat pump system and its control method |
| CN105066538B (en) * | 2015-07-15 | 2018-10-19 | 广东美的暖通设备有限公司 | A kind of air-conditioning Gas-supplying enthalpy-increasing method, system and air-conditioning |
| CN105066538A (en) * | 2015-07-15 | 2015-11-18 | 广东美的暖通设备有限公司 | Air supplying and enthalpy increasing method and system for air conditioner, and air conditioner |
| CN105115186A (en) * | 2015-09-15 | 2015-12-02 | 江苏天舒电器有限公司 | Cold and heat balance device of heat pump water heater test room |
| CN105180304A (en) * | 2015-10-20 | 2015-12-23 | 青岛海信日立空调系统有限公司 | Air-conditioning outdoor unit, multifunctional air-conditioning system and working method thereof |
| CN105180304B (en) * | 2015-10-20 | 2018-03-13 | 青岛海信日立空调系统有限公司 | Air-conditioner outdoor unit, multifuctional air conditioning system and its method of work |
| CN105588361A (en) * | 2015-11-04 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Multi-split air-conditioning system |
| CN105509364A (en) * | 2016-02-02 | 2016-04-20 | 珠海格力电器股份有限公司 | Air conditioning system and air injection superheat degree adjusting method |
| CN106440579A (en) * | 2016-09-26 | 2017-02-22 | 珠海格力电器股份有限公司 | Air conditioner and defrosting system thereof |
| CN106440579B (en) * | 2016-09-26 | 2019-01-18 | 珠海格力电器股份有限公司 | Air conditioner and defrosting system thereof |
| CN106500392A (en) * | 2016-10-25 | 2017-03-15 | 青岛海信日立空调系统有限公司 | A kind of air conditioner circulating system and its control method and air-conditioning |
| CN108332285A (en) * | 2017-12-29 | 2018-07-27 | 青岛海尔空调器有限总公司 | Air-conditioner system |
| WO2020042457A1 (en) * | 2018-08-31 | 2020-03-05 | 珠海格力电器股份有限公司 | Air conditioning system, and compressed oil supply apparatus and control method therefor |
| CN109595720A (en) * | 2018-12-11 | 2019-04-09 | 际高科技有限公司 | A kind of multi-connected machine capillary radiation system |
| WO2020164212A1 (en) * | 2019-02-12 | 2020-08-20 | 珠海格力电器股份有限公司 | Refrigerant circulation system and control method thereof, and air conditioner |
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| CN111765517B (en) * | 2020-06-06 | 2021-10-22 | 苏州浪潮智能科技有限公司 | A low temperature start air conditioning system |
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