CN107178833A - The outer machine system of recuperation of heat and air-conditioning system - Google Patents
The outer machine system of recuperation of heat and air-conditioning system Download PDFInfo
- Publication number
- CN107178833A CN107178833A CN201710399536.9A CN201710399536A CN107178833A CN 107178833 A CN107178833 A CN 107178833A CN 201710399536 A CN201710399536 A CN 201710399536A CN 107178833 A CN107178833 A CN 107178833A
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- Prior art keywords
- branch road
- recuperation
- heat exchanger
- compressor
- heat
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000005057 refrigeration Methods 0.000 claims abstract description 15
- 239000003507 refrigerant Substances 0.000 claims description 53
- 239000007788 liquid Substances 0.000 claims description 43
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 17
- 239000003921 oil Substances 0.000 description 10
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000000926 separation method Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/40—Vibration or noise prevention at outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
-
- 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]
- Y02B30/56—Heat recovery units
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention discloses a kind of outer machine system of recuperation of heat and air-conditioning system.The outer machine system of the recuperation of heat includes compressor (1), high-pressure air pipe (2) and the tie point (5) being arranged in parallel, second branch road (6) and the 3rd branch road (7), the first outdoor heat exchanger (8) is provided with tie point (5), the second outdoor heat exchanger (9) is provided with second branch road (6), when air-conditioning system is in outdoor temperature less than the cryogenic refrigeration pattern of the first preset temperature or in high temperature heating mode of the outdoor environment temperature higher than the second preset temperature, one of tie point and second branch road are connected, another branch road disconnects, 3rd branch road is connected with high-pressure air pipe (2), wherein the first preset temperature is less than the second preset temperature.According to machine system outside the recuperation of heat of the present invention, it is ensured that realize fast-refrigerating under low temperature environment, or realization is quickly heated in high temperature environments, improves the comfortableness that air-conditioning is used.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to machine system and air-conditioning system outside a kind of recuperation of heat.
Background technology
With the development and the consumption of the energy of society, energy-saving and environmental protection and sustainable development need solution badly as today's society
Important topic certainly.And in field of air conditioning, heat recovery multiplex outdoor unit can carry out refrigeration cool-down in the room to needing to freeze,
At the same time, other rooms need the interior machine evaporator heated to be transformed into condenser, and the heat produced is condensed using refrigerant,
Indoor temperature is heated；Hot water generator can also be entered by side joint indoors, domestic water is heated to a certain extent, realized
The secondary utilization of the energy, greatly reduces energy waste, while also slow down the step of Global Greenhouse Effect.
The outer machine of recuperation of heat operationally, if simply only operation refrigeration mode either runs heating mode, then just same
The outer machine of common heat pump is the same, and space air is adjusted, regulation that can be to the comfortable stabilization of room temperature.And it is special at some
Area, it is necessary to open heat recovery mode, i.e., freeze to part room, part room heated, thus be there may be simultaneously
Following situation, the room freezed when outdoor environment temperature is relatively low is imperceptible cold, or in the higher when system of outdoor environment temperature
The imperceptible heat in room of heat, have impact on the comfortableness that air-conditioning is used.
The content of the invention
A kind of outer machine system of recuperation of heat and air-conditioning system are provided in the embodiment of the present invention, it is ensured that realized under low temperature environment
Realize and quickly heat under fast-refrigerating or hot environment, improve the comfortableness that air-conditioning is used.
To achieve the above object, the embodiment of the present invention provides a kind of recuperation of heat outer machine system, including compressor, high-pressure air pipe
And tie point, the second branch road and the 3rd branch road being arranged in parallel, the first outdoor heat exchanger, second are provided with tie point
The second outdoor heat exchanger is provided with branch road, when air-conditioning system is in the cryogenic refrigeration mould that outdoor temperature is less than the first preset temperature
During formula, one of tie point and second branch road are connected, and another branch road disconnects, and the 3rd branch road is connected with high-pressure air pipe；
Or,
When air-conditioning system be in outdoor environment temperature be higher than the second preset temperature high temperature heating mode when, tie point and
One of second branch road is connected, and another branch road is disconnected, and the 3rd branch road is connected with high-pressure air pipe, wherein the first preset temperature is less than
Second preset temperature.
Preferably, being in series with the first four-way valve in tie point, the second four-way valve is in series with the second branch road.
Preferably, the first interface of the first four-way valve and the exhaust outlet of compressor are connected, second interface is outdoor with first
Heat exchanger is connected, the 3rd interface with and the 4th interface intercommunication after be connected to the gas returning port of compressor；Or, second four-way valve first
The exhaust outlet connection of interface and compressor, the second interface of the second four-way valve is connected with the second outdoor heat exchanger, the second four-way valve
The 3rd interface with and the 4th interface intercommunication of the second four-way valve after be connected to the gas returning port of compressor.
Preferably, the 3rd branch road is connected by the 3rd four-way valve with high-pressure air pipe, the first interface of the 3rd four-way valve with
The exhaust outlet connection of compressor, second interface is connected with high-pressure air pipe, the 3rd interface and and the 4th interface intercommunication after be connected to pressure
The gas returning port of contracting machine.
Preferably, being provided with first throttle device on the 3rd interface of each four-way valve and the connecting line of the 4th interface.
Preferably, being provided with second throttling device in tie point, second throttling device is arranged on the first outdoor heat exchange
One end of the remote exhaust outlet of compressor of device；Or, second be provided with the 3rd throttling arrangement on branch road, the 3rd throttling arrangement is arranged on
One end of the remote exhaust outlet of compressor of second outdoor heat exchanger.
Preferably, the outer machine system of recuperation of heat also includes liquid pipe, tie point and the second branch road are away from exhaust outlet of compressor
One end be commonly connected to liquid pipe.
Preferably, the outer machine system of recuperation of heat also includes refrigerant adjusting tank, the 3rd branch road and liquid pipe pass through branch line
The entrance point of refrigerant adjusting tank is connected to, the port of export of refrigerant adjusting tank passes sequentially through the 4th throttling arrangement and two streams in parallel
Adjustable valve is respectively connecting to exhaust outlet of compressor and the second branch road.
According to another aspect of the present invention there is provided a kind of air-conditioning system, including machine system and interior machine system outside recuperation of heat,
The outer machine system of the recuperation of heat is the outer machine system of above-mentioned recuperation of heat.
Preferably, the outer machine system of recuperation of heat includes high-pressure air pipe, liquid pipe and low pressure gas pipe, low pressure gas pipe is connected to compression
The gas returning port of machine, interior machine system includes machine stream in first, machine stream in second, machine stream and multiple indoor heat exchange in the 3rd
Device, machine stream, which is connected to machine stream in high-pressure air pipe, second and is connected to machine stream in liquid pipe, the 3rd, in first is connected to low pressure gas
Pipe, each indoor heat exchanger is in parallel, and the first end of each indoor heat exchanger is connected to high-pressure air pipe by the first indoor branch road, by with
Branch road is connected to low pressure gas pipe in the second Room of first indoor branch circuit parallel connection, and the second end of each indoor heat exchanger is indoor by the 3rd
Branch road is connected on liquid pipe, the 3rd indoor branch road and is provided with the 5th throttling arrangement, and first is provided with each first indoor branch road
Magnetic valve, is provided with the second magnetic valve in each second Room on branch road.
Apply the technical scheme of the present invention, recuperation of heat outer machine system includes compressor, high-pressure air pipe and is arranged in parallel
It is provided with tie point, the second branch road and the 3rd branch road, tie point on the first outdoor heat exchanger, the second branch road and is provided with
Two outdoor heat exchangers, when air-conditioning system, which is in outdoor temperature, is less than the cryogenic refrigeration pattern of the first preset temperature, tie point
Connected with one of the second branch road, another branch road disconnects, the 3rd branch road is connected with high-pressure air pipe；Or, when air-conditioning system is in
When outdoor environment temperature is higher than the high temperature heating mode of the second preset temperature, one of tie point and second branch road are connected,
Another branch road is disconnected, and the 3rd branch road is connected with high-pressure air pipe, wherein the first preset temperature is less than the second preset temperature.The recuperation of heat
Outer machine system includes two outdoor heat exchangers in parallel, and two outdoor heat exchanger in parallel at least one connections, therefore
When air-conditioning system works, the heat exchanger quantity for participating in heat exchange can be adjusted as needed so that at low ambient temperatures
Freezed or hot environment under when heating, the overall heat exchange area of outdoor heat exchanger can be reduced, can be subtracted in refrigeration
Coolant quantity in Shaoshi external heat exchanger, reduces the time that outdoor heat exchanger heats refrigerant, and increase, which is got in, heats interior machine progress
The coolant quantity heated, and then increase the coolant quantity for getting in that machine is freezed in refrigeration, so as to increase indoor refrigeration, in fact
Existing fast-refrigerating, when heating, the refrigerant temperature of compressor is flowed back in reduction, reduces system high-low pressure, it is to avoid occur system high pressure mistake
Compressor frequency reducing caused by height, it is ensured that indoor leaving air temp is stable, can also reduce outdoor unit bypass and frequently open phenomenon, drop
Low outer machine noise, realizes that interior is quickly heated, and improves comfortableness when air-conditioning is used.
Brief description of the drawings
Fig. 1 is the structural representation of the air-conditioning system of the embodiment of the present invention.
Description of reference numerals：1st, compressor；2nd, high-pressure air pipe；3rd, liquid pipe；4th, low pressure gas pipe；5th, tie point；6th, second
Branch road；7th, the 3rd branch road；8th, the first outdoor heat exchanger；9th, the second outdoor heat exchanger；10th, the first four-way valve；11st, the second four-way
Valve；12nd, the 3rd four-way valve；13rd, first throttle device；14th, second throttling device；15th, the 3rd throttling arrangement；16th, refrigerant is adjusted
Tank；17th, branch line；18th, the 4th throttling arrangement；19th, flow control valve；20th, machine stream in first；21st, machine stream in second；
22nd, machine stream in the 3rd；23rd, indoor heat exchanger；24th, the first indoor branch road；25th, branch road in second Room；26th, the 3rd indoor branch
Road；27th, the 5th throttling arrangement；28th, the first magnetic valve；29th, the second magnetic valve；30th, gs-oil separator；31st, gas-liquid separator.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as the limit to the present invention
It is fixed.
With reference to shown in Figure 1, embodiments in accordance with the present invention, the outer machine system of recuperation of heat includes compressor 1, high-pressure air pipe
2 and the tie point 5, the second branch road 6 and the 3rd branch road 7 that are arranged in parallel, the first outdoor heat exchanger is provided with tie point 5
8, the second outdoor heat exchanger 9 is provided with the second branch road 6, and when air-conditioning system, to be in outdoor temperature low less than the first preset temperature
Warm refrigeration mode or in outdoor environment temperature be higher than the second preset temperature high temperature heating mode when, tie point and second
One of branch road is connected, and another branch road disconnects, and the 3rd branch road is connected with high-pressure air pipe 2, wherein the first preset temperature is less than the
Two preset temperatures.Preferably, the first preset temperature herein is less than or equal to subzero 10 DEG C, and the second preset temperature is more than or equal to
30℃。
The outer machine system of the recuperation of heat includes two outdoor heat exchangers in parallel, and two outdoor heat exchangers in parallel are at least
There is a connection, therefore when air-conditioning system works, the heat exchanger quantity for participating in heat exchange can be adjusted as needed, made
Be freezed at low ambient temperatures or hot environment under when heating, the totality that outdoor heat exchanger can be reduced when freezing is changed
Hot area, reduces the coolant quantity in outdoor heat exchanger, reduces the time that outdoor heat exchanger heats refrigerant, and increase, which is got in, to be heated
The coolant quantity that interior machine is heated, and then increase the coolant quantity for getting in that machine is freezed in refrigeration, so as to increase indoor system
Cold effect, realizes fast-refrigerating, and the refrigerant temperature for flowing back to compressor can be reduced when heating, and reduces system high-low pressure, it is to avoid
Compressor frequency reducing caused by generation system high pressure is too high, it is ensured that indoor leaving air temp is stable, can also reduce outdoor unit bypass
Phenomenon is frequently opened, outer machine noise is reduced, realizes that interior is quickly heated, comfortableness when air-conditioning is used is improved.
Preferably, it is in series with tie point 5 on first four-way valve 10, the second branch road 6 and is in series with the second four-way valve 11.The
One branch road 5 is adjusted by the first four-way valve 10, and the first outdoor heat exchanger 8 of control makes as evaporator or condenser
With the second branch road 6 is adjusted by the second four-way valve 11, and the second outdoor heat exchanger 9 of control is used as evaporator or condenser
To use.
Preferably, second throttling device 14 is provided with tie point 5, second throttling device 14 is arranged on the first outdoor and changed
One end of the exhaust outlet of remote compressor 1 of hot device 8.Second throttling device 14 can be opened or completely closed completely, Ke Yiqi
Reducing pressure by regulating flow is carried out either to the first outdoor heat exchanger 8 will be entered to the refrigerant to being flowed out from the first outdoor heat exchanger 8
Interior refrigerant carries out the effect of reducing pressure by regulating flow.By adjusting the aperture of second throttling device 14, the flow of refrigerant can be carried out
Regulation, when second throttling device 14 is completely closed, then the first outdoor heat exchanger 8 is not involved in heat exchange.It is of course also possible to only
The magnetic valve that control tie point 5 passes through, or other valve arrangements are provided with one branch road 5.
Preferably, the 3rd throttling arrangement 15 is provided with the second branch road 6, the 3rd throttling arrangement 15 is arranged on the second outdoor and changed
One end of the exhaust outlet of remote compressor 1 of hot device 9.3rd throttling arrangement 15 can be opened or completely closed completely, Ke Yiqi
Reducing pressure by regulating flow is carried out either to the second outdoor heat exchanger 9 will be entered to the refrigerant to being flowed out from the second outdoor heat exchanger 9
Interior refrigerant carries out the effect of reducing pressure by regulating flow.By adjusting the aperture of the 3rd throttling arrangement 15, the flow of refrigerant can be carried out
Regulation, when the 3rd throttling arrangement 15 is completely closed, then the second outdoor heat exchanger 9 is not involved in heat exchange.It is of course also possible to only
The magnetic valve that control tie point 5 passes through, or other valve arrangements are provided with one branch road 5.
By the aperture for controlling the throttling arrangement 15 of second throttling device 14 and the 3rd, it is possible to easily control outdoor heat exchange
The heat exchange area of device, so that outdoor heat exchanger can realize that fast temperature is adjusted in the case where freezing and heating, is carried
The comfortableness of high air-conditioning.
Preferably, the first interface of the first four-way valve 10 is connected with the exhaust outlet of compressor 1, and second interface is outdoor with first
Heat exchanger 8 is connected, the 3rd interface with and the 4th interface intercommunication after be connected to the gas returning port of compressor 1.
The first interface of second four-way valve 11 is connected with the exhaust outlet of compressor 1, the second interface of the second four-way valve 11 with
Second outdoor heat exchanger 9 is connected, the 3rd interface of the second four-way valve 11 with and the 4th interface intercommunication of the second four-way valve 11 after connect
It is connected to the gas returning port of compressor 1.
First throttle device 13 is provided with 3rd interface of each four-way valve and the connecting line of the 4th interface.
By the 3rd interface of each four-way valve and the 4th orifice, it is therefore an objective to, can when carrying out the state switching of four-way valve
To cause to hinder to the position switching of valve element after avoiding one of the 3rd interface and the 4th interface from blocking, lead to not smoothly complete
State into four-way valve switches.Due to the 3rd interface and the 4th orifice, therefore the pressure at two ends of four-way valve core is consistent, or
Person is that pressure differential is smaller, will not form excessive resistance to the switching of valve element, it is ensured that the smooth conversion of spool position, realization pair
The adjustment of the working condition of four-way valve, it is ensured that the reliable and stable operation of air-conditioning system.
First throttle device 13 is provided with the 3rd interface of four-way valve and the connecting line of the 4th interface, can be passed through
The refrigerants that 13 pairs of first throttle device flows out from the 3rd interface throttle so that flow resistance of the refrigerant through the 3rd interface compared with
Greatly, it is ensured that when air-conditioning system is in and heats state, refrigerant enters directly into indoor after the exhaust outlet discharge of compressor 1,
The exhaust outlet of compressor will not be directly back to through the 3rd interface and the 4th interface, it is ensured that air-conditioning system heats the smooth fortune of state
OK.
Preferably, the 3rd branch road 7 is connected by the 3rd four-way valve 12 with high-pressure air pipe 2, and the first of the 3rd four-way valve 12 connects
Mouthful be connected with the exhaust outlet of compressor 1, second interface is connected with high-pressure air pipe 2, the 3rd interface with and the 4th interface intercommunication after connect
It is connected to the gas returning port of compressor 1.The high-pressure gaseous refrigerant discharged from the exhaust outlet of compressor 1 can be according to the operating mode of air-conditioning system
All either part enters high-pressure air pipe 2 through the 3rd branch road 7 and the 3rd four-way valve 12 for selection, then enters through high-pressure air pipe 2
Heat what is heated in interior machine to indoor set, so as to realize that indoor section is heated or whole is heated.
Preferably, the outer machine system of recuperation of heat also includes liquid pipe 3, and the branch road 6 of tie point 5 and second is vented away from compressor 1
One end of mouth is commonly connected to liquid pipe 3.Under cooling condition, gaseous coolant is through the room on the branch road 6 of tie point 5 and/or second
Then external heat exchanger exothermic condensation is delivered to indoor set into liquid refrigerants from liquid pipe, and side carries out expenditure and pressure indoors, and in system
Cold interior machine carries out heat absorption evaporation, as gaseous coolant, is finally back to through compressor gas returning port in compressor.In heating condition
Under, the outdoor that the liquid refrigerants after being condensed through indoor heat exchanger is entered on the branch road 6 of tie point 5 and/or second through liquid pipe 3
Heat exchanger is evaporated heat absorption, and as gaseous coolant, the gas returning port then through compressor 1 is entered in compressor 1.
Preferably, the outer machine system of recuperation of heat also includes refrigerant adjusting tank 16, and the 3rd branch road 7 and liquid pipe 3 pass through branched pipe
Road 17 is connected to the entrance point of refrigerant adjusting tank 16, and the port of export of refrigerant adjusting tank 16 passes sequentially through the 4th throttling arrangement 18 and two
Individual flow control valve 19 in parallel is respectively connecting to the exhaust outlet of compressor 1 and the second branch road 6.Refrigerant adjusting tank 16 can be to system
The coolant quantity of middle operation is adjusted so that operating load of the coolant quantity of operation all the time with system is participated in system and is matched,
The operational energy efficiency of raising system, it is ensured that system is maximized in efficiency all the time.
By controlling the aperture of two flow control valves 19, refrigerant adjusting tank 16 can be easily controlled to be delivered to compressor
Coolant quantity on gas returning port either the second branch road 6, so as to supplement the coolant quantity in system, it is ensured that operation is in systems
Coolant quantity it is moderate so that air-conditioning can operate in higher energy efficiency, reduce power consumption, improve refrigeration or heating efficiency.
Preferably, gs-oil separator 30 is additionally provided with the exhaust outlet of compressor 1, the outlet of gs-oil separator 30 is connected to
The gas returning port of compressor 1, the lubricating oil that gs-oil separator 30 is isolated is through in outlet return to compressor 1, in compressor 1
Lubricating oil is supplemented.
In the present embodiment, compressor 1 is two, and two compressors 1 are in parallel, and exhaust outlet is commonly connected to Oil-gas Separation
Device 30.The outlet of gs-oil separator 30 is provided with two return lines in parallel, and each return line connects a compressor 1
Oil return opening, and to the compressor 1 carry out oil return.Capillary and regulating valve are provided with each return line, so as to
So that the recirculating oil quantity of two return lines to be adjusted respectively so that oil return adjustment is more flexible and convenient, can preferably meet
The oil return of each compressor needs.
Preferably, gas-liquid separator 31 is connected with the gas returning port of compressor 1, the outlet of refrigerant adjusting tank 16 is connected to
Gas-liquid separator 31.Gas-liquid separator 31 can carry out gas-liquid separation to entering refrigerant therein, so that returning to compressor 1
The refrigerant of gas returning port be gaseous state, it is to avoid liquid refrigerants is entered in compressor 1 and occurs liquid hit phenomenon, and compressor 1 is formed
It is effectively protected.
Embodiments in accordance with the present invention, air-conditioning system includes the outer machine system of recuperation of heat and interior machine system, the outer machine of the recuperation of heat
System is the outer machine system of above-mentioned recuperation of heat.
Preferably, the outer machine system of recuperation of heat includes high-pressure air pipe 2, liquid pipe 3 and low pressure gas pipe 4, and low pressure gas pipe 4 is connected to pressure
The gas returning port of contracting machine 1, interior machine system includes in first in machine stream 20, second in machine stream the 21, the 3rd machine stream 22 and multiple
Indoor heat exchanger 23, machine stream 20 is connected to machine stream 21 in high-pressure air pipe 2, second and is connected to machine in liquid pipe 3, the 3rd in first
Stream 22 is connected to low pressure gas pipe 4, and each indoor heat exchanger 23 is in parallel, and the first end of each indoor heat exchanger 23 passes through the first indoor branch
Road 24 is connected to high-pressure air pipe 2, and low pressure gas pipe 4 is connected to by branch road 25 in the second Room in parallel with the first indoor branch road 24,
Second end of each indoor heat exchanger 23 is connected on liquid pipe 3, the 3rd indoor branch road 26 by the 3rd indoor branch road 26 is provided with the
Five throttling arrangements 27, are provided with the first magnetic valve 28 on each first indoor branch road 24, are set in each second Room on branch road 25
There is the second magnetic valve 29.
The course of work and high temperature that air-conditioning system is in cryogenic refrigeration and heat recovery mode are heated and recuperation of heat below
The course of work of pattern is illustrated.
When air-conditioning system is in cryogenic refrigeration and heat recovery mode, using indoor temperature as 20 DEG C, outdoor temperature is ﹣ 20
DEG C, indoor heat exchanger is four, respectively a, b, c and d, wherein indoor heat exchanger a, b, c refrigerating operatons, indoor heat exchanger d systems
Exemplified by heat operation, after air-conditioning system brings into operation, in the course of the work, the power down of the first four-way valve 10, the He of the second four-way valve 11
Electric on 3rd four-way valve 12, refrigerant is divided into two parts, and a portion passes through the 3rd four-way valve 12, passes through the He of high-pressure air pipe 2
Machine stream 20 is entered in first is heated at indoor heat exchanger d, now the indoor branch road 24 of first where indoor heat exchanger d
Branch road 25 is disconnected in connection, second Room, and refrigerant is entered through the first indoor branch road 24 from high-pressure air pipe 2 and put at indoor heat exchanger d
Heat condensation, realizes heating for indoor heat exchanger d, and the refrigerant after heat exchange condensation turns into the cold of liquid refrigerants or vehicle repair major
Matchmaker, then carries out reducing pressure by regulating flow through the 5th throttling arrangement 27 on the 3rd indoor branch road 26 where indoor heat exchanger d, as with
Refrigerant fluid based on gaseous coolant, then this part refrigerant enter in second connected with liquid pipe 3 at machine stream 21, with liquid
The refrigerant flowed into pipe 3 is mixed, then respectively through the respective 3rd indoor branch road 26 and positioned at the 3rd indoor branch
The 5th throttling arrangement 27 on road 26 gets in heat exchanger a, b and c after being throttled, and is inhaled indoors in heat exchanger a, b and c
Freezed after thermal evaporation, the refrigerant of the gasification of heat absorption evaporation afterwards enters machine stream in the 3rd through branch road 25 in respective second Room
Road 22, and the low pressure gas pipe 4 through being connected with machine stream 22 in the 3rd enters the progress gas-liquid separation of gas-liquid separator 31, after separation
The gas returning port of gaseous coolant from compressor 1 be back in compressor 1.
In this process, it is electric on the second four-way valve 11 due to the power down of the first four-way valve 10, therefore the second outdoor heat exchanger
9 are not involved in heat exchange, equivalent to reducing the heat exchange area and heat exchange amount of outdoor heat exchange system, therefore can to enter originally
The refrigerant of first outdoor heat exchanger 8 and the second outdoor heat exchanger 9 is redistributed, and partly enters the first outdoor heat exchanger 8,
Another part enters through the 3rd four-way valve 12 heats interior machine, so that refrigerant needs to heat the refrigerant in outdoor system
Amount reduce, the heating refrigerant time shortens, and improves and heat the exchange capability of heat of interior machine, realizes the fast-refrigerating under low temperature condition,
So that air-conditioning has more comfortableness.
When air-conditioning system is heated with heat recovery mode in high temperature, using indoor temperature as 20 DEG C, outdoor temperature is 40 DEG C,
Indoor heat exchanger is four, respectively a, b, c and d, wherein indoor heat exchanger a, b, c heating operations, and indoor heat exchanger d heats fortune
Behavior example, in the course of the work, electric on the first four-way valve 10 after air-conditioning system brings into operation, the second four-way valve 11 and the 3rd
Electric on four-way valve 12, refrigerant passes through the 3rd four-way valve 12, and indoor heat exchange is entered by machine stream 20 in high-pressure air pipe 2 and first
Heated at device d, now the indoor branch road 24 of first where indoor heat exchanger d is connected, and branch road 25 disconnects in second Room, refrigerant
Exothermic condensation at indoor heat exchanger a, b and c is entered from high-pressure air pipe 2 through the first indoor branch road 24, indoor heat exchanger a, b is realized
With heating for c, refrigerant after exothermic condensation turns into the refrigerant of liquid refrigerants or vehicle repair major, then through indoor heat exchanger a,
B and c each where the 3rd indoor branch road 26 on the respective stream of 27 pairs of the 5th throttling arrangement on refrigerant progress reducing pressure by regulating flow,
Refrigerant after reducing pressure by regulating flow is entered in second connected with liquid pipe 3 at machine stream 21, and then machine stream 21 is punished in second
Into two-way, enter outdoor heat exchanger through liquid pipe 3 all the way and carry out heat absorption evaporation and then through the progress gas-liquid separation of gas-liquid separator 31,
Compressor is finally back to, another road enters corresponding with indoor heat exchanger d after being shunted through machine stream 21 in second
Three indoor branch roads 26 and the 5th throttling arrangement 27 on the 3rd indoor branch road 26 get in heat exchange after being throttled
Device d, is freezed in heat exchanger d after heat absorption evaporation indoors, and the refrigerant of the gasification of heat absorption evaporation afterwards is passed through and indoor heat exchanger d
Branch road 25 enters machine stream 22 in the 3rd in corresponding second Room, and the low pressure gas pipe 4 through being connected with machine stream 22 in the 3rd enters
Enter to gas-liquid separator 31 and carry out gas-liquid separation, the gas returning port of gaseous coolant from compressor 1 after separation is back to compressor 1
In.
In this process, due to electric on the first four-way valve 10, electricity on the second four-way valve 11, and the on the second branch road 6
Three throttling arrangements 15 are closed, therefore the second outdoor heat exchanger 9 is not involved in heat exchange, equivalent to the heat exchange for reducing outdoor heat exchange system
Area and heat exchange amount.In addition, the rotation speed of fan reduction of the first outdoor heat exchanger 8 so that the air quantity of the first outdoor heat exchanger 8 subtracts
It is small, reduce with the heat exchange amount of external environment, there's almost no heat exchange, heat exchange relies primarily on the heat exchange between indoor heat exchanger
Carry out, therefore, the refrigerant temperature for flowing back to compressor through gas-liquid separator 31 by low pressure gas pipe 4 and outdoor heat exchanger can be big
Big reduction, so as to reduce system high-low pressure, it is too high and cause compressor frequency reducing to occur system high pressure, indoor set is gone out wind-warm syndrome
The wave phenomenon back and forth of reduction is spent, so that ensure that indoor leaving air temp is stable, and when heating, by adjusting outdoor heat exchanger
System high pressure can be reduced, outer machine bypass can be also reduced and frequently open phenomenon, reduce outer machine noise, greatly promote air-conditioning comfortable
Property.
When air-conditioning system be in normal heating mode when, namely outdoor environment temperature be less than indoor environment temperature when, own
Outdoor heat exchanger all can be used as evaporator, so as to ensure the heating effect of indoor heat exchanger.Work as air-conditioning system
During in normal refrigerating mode, namely outdoor environment temperature be higher than indoor environment temperature when, all outdoor heat exchangers can be complete
Portion is used as condenser, so as to ensure the refrigeration of indoor heat exchanger.
Certainly, above is the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art
For, on the premise of its general principles are not departed from, some improvements and modifications can also be made, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of outer machine system of recuperation of heat, it is characterised in that including compressor (1), high-pressure air pipe (2) and be arranged in parallel the
The first outdoor heat exchanger (8) is provided with one branch road (5), the second branch road (6) and the 3rd branch road (7), the tie point (5),
The second outdoor heat exchanger (9) is provided with second branch road (6),
When air-conditioning system, which is in outdoor temperature, is less than the cryogenic refrigeration pattern of the first preset temperature, the tie point and described
One of second branch road is connected, and another branch road disconnects, and the 3rd branch road is connected with the high-pressure air pipe (2)；
Or,
When air-conditioning system be in outdoor environment temperature be higher than the second preset temperature high temperature heating mode when, the tie point and
One of described second branch road is connected, and another branch road disconnects, and the 3rd branch road is connected with the high-pressure air pipe (2), wherein
First preset temperature is less than the second preset temperature.
2. the outer machine system of recuperation of heat according to claim 1, it is characterised in that be in series with the on the tie point (5)
The second four-way valve (11) is in series with one four-way valve (10), second branch road (6).
3. the outer machine system of recuperation of heat according to claim 2, it is characterised in that the first of first four-way valve (10) connects
Mouthful be connected with the exhaust outlet of the compressor (1), second interface is connected with first outdoor heat exchanger (8), the 3rd interface and
With the gas returning port that the compressor (1) is connected to after the 4th interface intercommunication；Or,
The first interface of second four-way valve (11) is connected with the exhaust outlet of the compressor (1), second four-way valve
(11) second interface is connected with second outdoor heat exchanger (9), the 3rd interface of second four-way valve (11) and and institute
The gas returning port of the compressor (1) is connected to after the 4th interface intercommunication for stating the second four-way valve (11).
4. the outer machine system of recuperation of heat according to claim 2, it is characterised in that the 3rd branch road (7) passes through the three or four
Port valve (12) is connected with the high-pressure air pipe (2), the first interface of the 3rd four-way valve (12) and the row of the compressor (1)
Gas port is connected, and second interface is connected with the high-pressure air pipe (2), the 3rd interface and and the 4th interface intercommunication after be connected to the pressure
The gas returning port of contracting machine (1).
5. machine system outside the recuperation of heat according to claim 3 or 4, it is characterised in that the 3rd interface of each four-way valve
First throttle device (13) is provided with the connecting line of the 4th interface.
6. the outer machine system of recuperation of heat according to claim 1, it is characterised in that be provided with the on the tie point (5)
Two throttling arrangements (14), the second throttling device (14) is arranged on the remote compression of first outdoor heat exchanger (8)
One end of machine (1) exhaust outlet；
Or, the 3rd throttling arrangement (15) is provided with second branch road (6), the 3rd throttling arrangement (15) is arranged on described
One end of remote compressor (1) exhaust outlet of second outdoor heat exchanger (9).
7. the outer machine system of recuperation of heat according to claim 6, it is characterised in that the outer machine system of the recuperation of heat also includes liquid
Manage (3), the one end of the tie point (5) and second branch road (6) away from the compressor (1) exhaust outlet is commonly connected to
The liquid pipe (3).
8. the outer machine system of recuperation of heat according to claim 7, it is characterised in that the outer machine system of the recuperation of heat also includes cold
Matchmaker's adjustment tank (16), the 3rd branch road (7) and the liquid pipe (3) are connected to the refrigerant by branch line (17) and adjusted
The entrance point of tank (16), the port of export of the refrigerant adjusting tank (16) passes sequentially through the 4th throttling arrangement (18) and two in parallel
Flow control valve (19) is respectively connecting to the compressor (1) exhaust outlet and second branch road (6).
9. a kind of air-conditioning system, including machine system and interior machine system outside recuperation of heat, it is characterised in that the outer machine system of the recuperation of heat
Machine system outside recuperation of heat any one of claim 1 to 8.
10. air-conditioning system according to claim 9, it is characterised in that the outer machine system of the recuperation of heat includes high-pressure air pipe
(2), liquid pipe (3) and low pressure gas pipe (4), the low pressure gas pipe (4) are connected to the gas returning port of the compressor (1), the interior machine
System includes machine stream (20) in first, machine stream (21) in second, machine stream (22) and multiple indoor heat exchangers in the 3rd
(23), in described first machine stream (20) be connected to machine stream (21) in the high-pressure air pipe (2), described second be connected to it is described
Liquid pipe (3), machine stream (22) is connected to the low pressure gas pipe (4) in the described 3rd, and each indoor heat exchanger (23) is in parallel, respectively
The first end of the indoor heat exchanger (23) is connected to the high-pressure air pipe (2) by the first indoor branch road (24), by with institute
State branch road (25) in the first indoor branch road (24) second Room in parallel and be connected to the low pressure gas pipe (4), each indoor heat exchange
Second end of device (23) is connected on the liquid pipe (3), the described 3rd indoor branch road (26) by the 3rd indoor branch road (26) and set
The 5th throttling arrangement (27) is equipped with, the first magnetic valve (28) is provided with each described first indoor branch road (24), each second
The second magnetic valve (29) is provided with indoor branch road (25).
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| CN201710399536.9A CN107178833B (en) | 2017-05-31 | 2017-05-31 | Heat recovery external machine system and air conditioning system |
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| CN110779080A (en) * | 2019-10-10 | 2020-02-11 | 珠海格力电器股份有限公司 | Continuous heating heat recovery air conditioner outdoor system, heat recovery air conditioner and using method thereof |
| CN111707014A (en) * | 2020-07-02 | 2020-09-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system and control method thereof |
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